So Toei could make money :lolol

That was a Hyper Battle Video (Or it's predecessor).
If those are to be taken seriously, then nothing in KR would make sense.
EVER.

That's how they explained them being in the same world, but they were still two separate characters in Decade. Before they show Diend summoning Black, the Kotoro of Black's world is shown being unable to follow Tsukasa into RX world.

The Kotaro of RX World is searching for Joe the Haze, who ends up fighting alongside the Kotoro of Black's world. Its very clear they're meant to be parallel dimensions.

Oh you anti-Decade people are so.......cute.......I just want to pinch your little cheeks. But I will not change your diapers. Your old enough to go to the bathroom like a proper grown-up. :)

I'm always baffled as to why anyone can consider Decade a good series.
I understand why anyone can like anything, but considering it legitimately good is where I get confused :p

I never said it was a good series. I never even said it was my favorite series. However it was my FIRST series. And because of that, it will always hold a special place in my heart, and I will defend it based on that. There are series I've seen that I've liked WAY more than it. I defend it for what it means to me personally. That's all.

I think of Decade kind of like a really great roller coaster with a broken track. The end of the ride is painful, but up until then it is a whole lot of fun.

Plus I just really love his suit design. It's easily in my top ten, if not top five Rider suits of all time.

Can we just stop discussing Decade and be glad he'll be in the tournament for Rider of the Year in December? :lol.

In the meantime, this battle is closed, W will proceed onto the tournament, and I'm currently typing up the facts for the next and last battle before I make the tournament

Kamen Rider Similarities Battle Round 20: Sequelitis
 

Before we begin, let us remember the Riders that will proceed onto the tournament-
DiEnd
Caucasus
Skull
Kiva
Kuuga
Fourze
Super-1
Blade
Knight
Amazon
W

And now, this battle will be between 3 riders whose series were sequels (the third is slightly a sequel) to their previous series-

Kamen Rider V3 (1973)

VS

Kamen Rider Black RX (1988)

VS

Kamen Rider Agito (2001)

Facts-
V3-

• Double Typhoon Kamen Rider V3's first and foremost weapon - the Henshin belt "Double Typhoon". Kazami Shiro transforms into V3 by performing the "Henshin", a series of moves which activates the 2 revolving pistons of the Double Typhoon, and then converts the accumulated wind energy to transform Kazami into Kamen Rider V3. Kamen Rider V3 is powered by the right "Kamen Rider No.1 Typhoon" and the left "Kamen Rider No.2 Typhoon". This allows V3 to utilize both the "Skill" of No.1 and the "Strength" of No.2 Super Antenna The communication device between Kamen Rider V3 and the Double Riders. It can be used to communicate with the Shonen Rider Squad Headquarters and the scouts' individual Pendants.
• V3 Hopper- The V3 Hopper is a surveillance advancement built into V3 by the Double Riders. Residing in a holster on the left side of V3's Henshin Belt, this mini transmission satellite is rocket-propelled vertically into the air to allow V3 an extensive view of the surrounding terrains, or to track fleeing enemies. The images captured by the V3 Hopper are directed to V3's Matrix Eye.
• V3 Centrifugal Kick Spinning in mid-air, it allows the kick to generate massive centrifugal power.
• Special Hardened Muscles- By calling upon the power of Double Typhoon, Special Hardened Muscles form a powerful resistance.
• V3 Screw Kick- A special technique that allows a devastating mid-air spinning kick to be dealt to an enemy's body.
• Special Spring Muscles- The spring muscles can withstand up to 10 times the force put against them.
• V3 Drill Attack-The counter-spinning attack used against opponent.
• Red Lamp Power- Red Lamp Power draws in an outside energy directed at V3, and doubles it in return.
• Energy Converter-Located in a circuit box on the right of V3's Henshin Belt. It allows channeling or conversion of internal or external power sources - such as the Double Rider's pendant.
• O Signal- A device which records and analysis enemies' attacks and weapons. The result: V3 learns from his battles and does not lose to a repeated attack/weapon.
• Cellular Strength Device- It causes the fusing of metal blades which come into contact with V3's body; best utilized through the crossing of hands, in order to block and damage metal weapons.
• Red Bone Power- It concentrates all of V3's energy into the center vertical thorax, or "Red Bone", and then expel all the energy at once.
• Scramble Hopper- Special Attachment to the standard V3 Hopper, which creates a sound vibration which disturbs the physical nature of mutants and legionnaires; also can create a limited personal barrier to protect humans from mutant attacks.
• V3 Return Kick- Kamen Rider V3's signature move. It allows a repeat kick, via springing off the monster, to the exact point of first contact.
• V3 Barrier- 1,000,000 volts of electricity are run throughout the surface as an effective deflector.
• Reverse Double Typhoon- It expels the energy stored in the belt, causing a power concussion to the target.
• Oxygen Cylinders- It stores up to 3 hours of oxygen for marine battles.
• Electro Eye- It can trace the undetectable footprints of kaijin.
• Matrix Eye- The X-rays can penetrate a mutant's body to locate its weak point.
• Gliding Muffler The mufflers on the back assists in guiding V3 while flying, or gliding to earth.
• Propeller Chop Its special muscles allows arms to spin as a propeller, to deliver powerful blows.
• V3 Thunder A 1,000,000 volts electrical charge fired from V3's antennae.
• Freezer Shot It pulls full internal power to focus a sub-zero effect on an opponent or object, shot from the antennae.
• Red Bone Ring It detaches from V3's body to form a rolling weapon.
• Flame Pillar Kick- Nuclear-generated power in transferred into V3's foot to allow a burning and explosive kick.
• Rides the Hurricane Rider Machine
• Weaknesses- After performing the Reverse Double Typhoon, Kazami can only re-transform to V3 after a three-hour period. Unknown how he will be against modern technology.

Black RX-

• BLACK RX is a photosynthetic warrior as well as the evolved form of BLACK, using the sun as his main energy source. His Sunriser has the two pieces of Kotaro's shattered Kingstone.
• His signature weapon is the Revolcane sword, a lightsaber like sword
• He can perform the RX Kick dropkick.
• Rides the Acrobatter- Acrobatter is the revived version of BLACK's old motorcycle, the Battle Hopper. It is now capable of speaking coherent Japanese, and often has conversations with Kotaro. Whenever BLACK RX transforms into any of his two other forms, it does the same.
• Drives the Ridron- a high-speed car created by Kotaro based on the blue prints provided by Proff. Walter of one of the colonies the Crisis Empire set up. Though immobile at first, Kotaro brought Rideron into the cave of the Kujira Mutant where he was brought back to life in Kamen Rider Black. Able to reach speeds up to 1500 km, Rideron can travel over land and sea. It is highly intelligent, similar to Acrobatter. It has two mandibles that can extend from the front to do break-ins or ramming enemies.
• Can switch to Robo Rider or Bio Rider
• Robo Rider is a form where BLACK RX 's armor becomes bulky and more robotic-like, with black and yellow coloring and his Sunriser resembles a gearbox. During his duration as the "Prince of Sadness", both his strength and defense are enhanced. He is also unharmed by explosions or projectile weapons. The only downsides are that he moves slower than BLACK RX as well as possessing semi-robotic movement, slowing his reaction time. His weapon is the Vortech Shooter, an energy firing pistol. The equipment of Robo Rider is the Vortech Shooter- Robo Rider's signature weapon is the Vortech Shooter pistol that shoots a powerful energy blast that can destroy an enemy in one blow. According to material, this gun ranges limitless and never misses the target. The Acrobatter transforms into Roborizer when RX becomes Robo Rider. This form of Acrobatter has two blasters mounted at its rear.
• Bio Rider is a form where BLACK RX's armor becomes much sleeker, blue and silver all over and his Sunriser belt resembles a single Kingstone belt. During his duration as the "Prince of Anger", his speed is enhanced .He can also transform with the speed of up to 1000m into gel for escaping traps or attacking enemies while not getting hurt in the process (gel form is invincible). Bio Rider's signature weapon is the Bio Blade katana. Like the Revolcane, Bio Blade has also a light saber mode that can slash his enemy in one blow. In this form, the Acrobatter transforms into Mach Jabber when RX becomes Bio Rider.
• Weakness- The King Stone in his belt can be shattered.

Agito-

• The Alter Ring is a mysterious belt bestowed upon Shōichi by the Over Lord of Light. It holds the "Seed of Agito" and is the source of his power. As he grows in strength, he would unlock its full powers.
• Basic form is Ground Form, with 5 other forms
• Ground Form is the first of Agito's numerous forms. This form harnesses the power of the earth, turning Tsugami's entire body into a lethal weapon, with bone-crushing blows and crippling locks. Of all the forms, the golden Ground Form is the most balanced, with power, speed and strength working in harmony to make the most of its capabilities.
  At its peak, the crest horns upon his head opens, pushing all of Agito's capabilities to their fullest, emanating beneath his feet, into his legs to execute his Rider Kick, a jump kick of incredible raw power and force; with a force of 30-tons, or with the Machine Tornador, the Rider Brake jumping off the Machine Tornador at full speed, and Dragon Breath, which involves ramming the side of the Machine Tornador into the enemy. Ground Form has also been shown to be able to use a Rider Punch.
• Storm Form is the second form of Agito, triggered when Shōichi activated the left switch on the Alter Ring, 'opening' the "Blue Dragon's Eye." The blue "Storm Form" harnesses the power of wind through the left arm, and imparts the form with supernatural agility and reflexes. The most nimble of forms, Storm Agito maneuvers with such swiftness and cunning that its movements parallel foresight.
  This form also carries a signature Storm Halberd- a folding, twin-bladed pole arm that serves as Agito‘s primary means of attack while in Storm Form. But, however superior in overall speed and agility, the Storm Form is by far the weakest in comparison to the other forms, in terms of power and strength. His final attack is Halberd Spin, whipping up a powerful gale by twirling the open Storm Halberd at rapid speeds, blowing away everything in the general vicinity, and gaining swing-momentum for a finishing strike, and with the Machine Tornador, the Halberd Brake.
• Flame Form is the third of Agito's forms to be revealed, triggered by activating the right switch on the Alter Ring, 'opening' the "Red Dragon's Eye." The searing power of flame flows through the right arm and blesses the red body of the Flame Form with incredible strength. Aside from its apparent superiority in the areas of power and defense, the Flame Form possesses phenomenal heightened senses; his senses have increased to point where an enemy's presence - whether distant, hidden, and/or invisible to the naked eye - can be detected with frightening precision.
  This form also has exclusive access to the Flame Saber, using it in his Saber Slash attack which anything he slices with the blade is reduced to ashes, or the stronger Double Saber Slash with an additional Flame Saber to deliver a double saber-stroke attack. With the Machine Tornador, Flame Form is able to use Saber Brake.
• In the brief instance when he was able to recover his memory, Shōichi revealed the power to invoke a new level of transformation possessing extraordinary properties of Ground, Storm, and Flame forms: the Trinity Form. This form's capabilities, a combination of all three, harness the strongest qualities of Agito's powers and execute the forms' finishing attacks. In this form, Agito can wield both Storm Form's Storm Halberd and Flame Form's Flame Saber.
• Burning Form, known as "the power awakening to infinite possibilities," is born when Shōichi learned to channel his fighting spirit into power. The transition was rough on Shōichi's body, as he was virtually incapacitated during the emergence of this new power. But as they manifest, the nature of the power became clear; and it is one not easily controlled. The Burning Form amplifies and translates Agito's fury into power; thus the greater his rage, the more powerful the Burning Form became, as seen in his Burning Rider Punch attack. His signature weapon, the Shining Caliber, is a dual-bladed weapon capable of two modes: Single Mode, as a dual-blade sword and Twin Mode, as paired blades. Burning Form uses the "Single Mode" exclusively for his "Burning Bomber," cutting down the enemy with lethal blazing strokes.
• Most Powerful Form- Shining Form
• Shining Form, also known as the "evolution of infinite possibilities," was awakened by the light of the sun. It was an evolution unlike anything ever anticipated by the Overlord, born when Shōichi molts after having mastered his power in Burning Form. Although the power of his fists remain unchanged, all other attributes being pushed to their peak, making Shining Form Agito's greatest form. In Shining Form, Agito wields the Shining Caliber in Twin Mode as paired blades for his high-speed "Shining Clash" attack. His final attack is Shining Rider Kick, concentrating the Agito Power before him to accelerate to supersonic speeds as he attacks with his strongest flying kick, piercing his enemy with extreme force. In Movie War 2010, it was shown that Agito Shining can also perform the Shining Rider Punch.
• Weaknesses- Unfortunately, when Shōichi once again loses his memory, the power of the Trinity Form was sealed away. Out of all of Agito's forms, Burning Form is the slowest of them all.

These three are competing for the last spot in the second rider tournament! Place your votes! This battle closes Sunday!

Agito because it's awesome. If I had to solely choose based on suit design I would have gone with RX but I think Agito is the clear winner here even though it's a loose sequel

I'm going to vote V3. Black RX is cool and has one of my favorite designs, but the Kingstone running the risk of being broken is a disadvantage plus if the fight takes place indoors Black RX loses power.

Agito is going to fare a little better,plus his series has a excellent OST but overall V3 has the experience to pull though. After reading what he can do, I think the whole thing with his tech being older is not going to be a severe handicap.

This is a tough one, all three are really strong. Black RX has some nice weapons and Biorider is kind of broken as hell. Agito is also incredibly powerful and Shining Form is probably one of the most powerful ultimate forms ever. Ultimately, though, I have to go with V3. He was built to have the combined power of both Riders 1 and 2, plus he has the 26 secrets, which include some really awesome and powerful moves. For my money, he's always been the most powerful of all the Showa Riders. He's also a really badass character and wouldn't hesitate to hold back.

Agito is currently ahead with 7 votes, while V3 and Black RX follow with 2!

Torn between Agito and V3, but look at the stats I think I'll put my bet on V3.

Can I be honest? I voted Black Rx solely because he was Masked Rider, and because somehow gaining more power from water spouting from the ground.. is frankly hillarious.

Glad more people have voted, V3 currently has 4, Black RX currently has 4, and Agito still has 7! This battle closes midnight people! Get on it :thumb:

Agito for me, as it is my favorite Rider series ever.

Not really a lot of replies on this thread, so I'll end the battle. Agito takes the final slot in the tournament!

Kamen Rider Similarities Tourney 2, Battle 1: Multiform Balance
 

The Tournament begins! Here are the first 3 to fight for a spot in the semifinals!

Kamen Rider Kuuga (2000)

VS

Kamen Rider Kiva (2008)

VS

Kamen Rider W (2010)

Stats for our competitors!
Kuuga:

• Wears the Arcle, giving him access to 14 different forms. The belt also has fused with him, making it impossible to remove from him without killing him.
• His 4 standard forms are Mighty, Dragon, Pegasus and Titan.
• Mighty is a balanced fighter.
• Dragon is an azure form that allows Kuuga to be more agile and quicker, although his physical strength is lower than Mighty Form, Dragon Form enables Kuuga to and jump quickly in order to pursue the enemy. However, it also gives Kuuga less protection, yet being better suited for quick movements and more jump power. To make up for the lack of strength, he uses the Dragon Rod staff as his weapon, created by using any pole or stick-like object to manifest it. His finishing move in this form is Splash Dragon, an aerial thrust attack to the torso.
• Pegasus is a green shooting form where Kuuga's senses are heightened to extreme, superhuman levels, enabling him to see, hit and hear his opponents with deadly precision. It also allows Kuuga to detect the enemy's position, despite whatever ability they may have to avoid detection. The downside to this is that it can not be sustained for too long because of the enormous strain placed on the nervous system from over stimulation (only 50 seconds), and if Kuuga exceeds this limit, he shall be knocked back into Growing Form and become unable to transform for two hours. Kuuga uses the Pegasus Bowgun- a crossbow/gun hybrid weapon that can be created out of any gun-like object, commonly Ichijo's hand gun. His finishing move with the bow gun is "Blast Pegasus", an arrow shot from the bowgun after pulling the hammer back to the fullest length.
• Titan is a purple herculean form where his defense is greatly increased, allowing him to withstand most of his opponents' attacks long enough to get in close range, despite sacrificing speed. This form has much larger armor that is mainly silver with large purple trims. Although this armor provides superior protection, it still leaves parts of his body exposed, thus making him still suspectible to damage. He uses the Titan Sword that can be created out of pole or stick-like objects, normally the control handle of his bike. His finishing move is "Calamity Titan", a powerful sword thrust wherein Kuuga twists the blade as it is impaled.
• Each of those forms can be further enhanced into Rising forms, adding golden trim and enhancing their weapons.
• Can turn into Amazing Mighty Form, giving him a lot more power.
• Most Powerful Form: Ultimate.
• His most dangerous form, Ultimate Form combines all the powers of the other forms, Ultmate Kuuga has a much different design colored black with gold (and a little silver) trims all over his body, as well as having five horns on the headcrest, a black belt core and spiky-looking armor. Originally a risk is that the user would lose control and become like Daguba, a monster bent on killing everything in its way. However, due to Godai's gentle nature, he retains his will as he uses the new form against Daguba, retaining the red eye color of Mighty Form as opposed to the original black eyed color. When in battle, Ultimate Kuuga is able to see a monster's human form, every single attack from Kuuga Ultimate causes his opponent to bleed, despite the enemy's powerful armor.
  This form can also utilize the same powers as Daguba including Pyrokinesis, along with the ability to utilize the Dragon Rod, Pegasus Bowgun, and Titan Sword, all in Rising form. However this ability was never shown along with the Ultimate Form's most powerful attack, the "Ultimate Kick," which is the strongest version of his Rider Kick, easily capable of destroying the entire world.
• Is assisted by the Gouram, which can combine with his motorcycle, the BeatChaser 2000, which can become the BeatGouram. The Gouram can attack opponents too.
• Weaknesses- His kindhearted nature may cause him to hold back against opponents. If he is seriously injured, he will turn into Growing Form and not be able to transform for two hours.

Kiva:

• Able to perform the Darkness Moon Break, a rider kick that shifts day to night
• Can shift into Garulu Form, wielding the Garulu Saber, giving him the ability to fight in a feral state while increasing his speed
• Can shift into Basshaa Form, allowing him to wield the Bashaa Magnum and control water, with his finisher being able to follow the opponent, due to his increased accuracy and marksmanship.
• Can assume Dogga Form, allowing him to wield the Dogga Hammer and control electricity, while also giving him super strength.
• Can blend the three forms and become DoGaBaKi form, allowing him to access the 3 weapons.
• Can attach the Buroon Booster to his motorcycle, allowing it to increase speed.
• Can summon the Castle Doran and Shoodoran, dragons to aid him in battle.
• Most Powerful Form: Emperor Form
• As Emperor Form, he becomes exponentially stronger, able to use Tatsulot to use several “Fever” attacks and can assume Flight Style, a dragon like creature known as the “Emperor Bat.”
• Wields the Zanvat Sword
• Weaknesses- Kiva may hesitate killing someone if they had befriended him, Kivat is required to access Kiva Form while Tatsulot is required to access Emperor Form, if either are incapacitated, he can’t fight. Dogga Form loses speed in favor of power, Basshaa form lacks power in hand to hand combat.

Double:

• Has the vast knowledge of the Earth (The Gaia Memory)
• Has 9 different Basic Forms, 1 Mid-Season Upgrade (FangJoker), 1 Super Mode (Xtreme) and 1 Eleventh Hour Superpower (Gold Xtreme)
• The Metal Memory gives him the Metal Shaft, a staff weapon
• The Trigger Memory gives him the Trigger Magnum, a firearm.
• The Heat Memory gives him the ability to create fire from the Heat Side
• The Luna Memory allows him to stretch on the Luna Side
• The Cyclone Memory gives him the ability to create wind powered attacks on the Cyclone Side
• LunaTrigger form can unleash homing shots
• Has the HardBoilder and the RevolGarry as his vehicles.
• Most Powerful form: CycloneJoker Xtreme (In movies, CycloneJoker Gold Xtreme)
• CJX can look up opponent's weakness, and channels it through the Prism Bicker
• Weakness: Both Phillip and Shotaro need to transform. If one is incapacitated, transformation is unable to happen. Gaia Memories can be taken from them.

Who is the most powerful rider?! This battle closes Tuesday!

I know I'm going to hear the inevitable "Kuuga blows up the citys" argument but I think it's really a tossup between Kuuga and Kiva. I don't think I could vote for W one this one but I'm sure his fans will push him to victory.

W and Kiva seem to be pretty closely matched, really. Fang Joker could closely take on Garulu, same with Luna Trigger and Bashaa. Probably also true for CJX and Emperor.
The only problem I have with this is actually envisioning them fighting. That's generally the thing with Kamen Riders. They're meant to be superheroes, allying with justice, rather than fighting amongst themselves (Ryuki be damned). I just can't imagine W, Kiva or Kuuga fighting any of each other.

It's a shame I haven't watched Kuuga or Kiva. I've only seen them in action in Decade, but I doubt that's the same. I'm going to have to default to W here.

I'm going to go with Kiva on this. Double isn't as strong as the other two and Kuuga can't really let loose with his Ultimate Form without running the risk of going berserk. Kiva on the other hand has proven he can handle his ultimate form and if all else fails can turn into a dragon.

Kiva has to win! He kicks so hard he breaks the sun! THE SUN!

Kuuga, no contest. He is, plain and simple, the most powerful Kamen Rider ever. Even if he wouldn't go into Ultimate Form, Amazing Mighty is still more than powerful enough to take on most other ultimate forms. I love Double, but I just don't think he's strong enough to match up with Kuuga. He'll still probably win this on popularity, but power-wise no one can top Kuuga.

And Wataru's the worst main Rider ever, so he's not even a factor here. He'll get hit once or twice and then go sulk in his bathtub like the little emo twerp he is. :p

I am totally okay with that, even though I voted for V3. Agito is a great Kamen Rider.

Okay, I've only seen 1 person explain why he voted for Double. I don't wanna be a buzz kill, but whoever voted for Double, please explain why or your votes won't be counted

Sorry but at this point I'm so sick of the 'Kuuga is the strongest rider ever' argument that I'm not voting for him. Kiva gets my vote. I mean, the Zanbat Sword has a limiter placed on it because it's so powerful, it makes Wataru so powerful, that he completely loses control. He'd be unbeatable even with the limiter but without it he'd be unstoppable. He has the same advantages Kuuga would with his multiple forms and has the added bonus of DoGaBaki Form to use all of his powers in balance. And Emperor form is pretty much the boss.

That seems a little excessive. I mean I get your point but you shouldn't really be using a poll system if you expect everyone to actually comment on why too.

I know ZeoRangerV. It's just that, I don't want these things to always be one-sided, you know? What I want people to observe in these battles are the powers of the riders, but whenever there's a poll with W in it, he's picked based on his popularity. It wasn't until the other tournament in the first round that people stated why they wouldn't pick him in a battle of power. But looking at the poll right now, I won't do as previously stated and will count the all the votes.

Yeah I get what you're saying, I've been enjoying these contests a lot so I'd hate to see them fall down into simply a popularity contest too.

Anyway I voted for Kuuga. Dunno why but out of the little I've seen as all three of them he struck me as the strongest, and the stats do a lot in his favour too.

Huh, it's a tie right now.

I went with Kuuga. He's just to pwerful for these two. I think he can be beat, just not by W and probably not by Kiva (I'm not all that familiar with Kiva).

I'll agree that Kiva's forms match up with Kuuga's well, but there is still an advantage Kuuga has there - all of his forms have Rising versions that are significantly more powerful than the original. Dragon Kuuga vs. Garulu Kiva may be pretty evenly matched, but Rising Dragon would stomp him. The same holds true for the other two forms and I'd say Rising Mighty is easily a match for DoGaBaKi (assuming Wataru remembers it exists - also assuming Wataru doesn't just go straight to Emperor like he does in every fight). And I'd personally maintain that Amazing Mighty is a match for Emperor, which is only about middle of the road in terms of final form strength. And if it isn't, well Ultimate sure as hell is. Honestly, the two do a lot of similar things, but Kuuga just does them better.

kiva!

Im gonna have to go with Kuuga. I think he is the most powerful on the list even though my only experience with him is from Decade. Id say W is close second.

If it was Decade Kuuga, Mr. Useless Yuusuke would've forgotten he could even transform and both W and Kiva would beat his sorry ass. But this is Godai, the competent Kuuga.

Just like Blade Raider said, all Riders competing in this tournament are the originals, so no AR Kuuga and Kiva in this fight, it's Yuusuke Godai and Wataru Kurenai

But W kicks so hard that he breaks himself.

Double. Out of all the Riders, he has the most versatility. Plus, it kinda helps that he has all of the knowledge on Earth (more or less). Need a sharpshooter? LunaTrigger is the way to go. A berserker? FangJoker for the win. A knight in shining armor? CycloneJokerXtreme kills you with rainbows. And that's only 3 of his 15-16 forms (if you count CycloneAccelXtreme or if you count CycloneCyclone and JokerJoker as two forms along with CycloneAccelXtreme, or count Kamen Rider Joker as another form of Double and not another Rider).

Oh dear lord, you just reminded me of one of Double's greatest powers :lolol