[FairyKing]

Serious story out of the way, now on to the fun part: The toys!

Riders from Runegard transform using the Advendriver, a belt developed to help people fight against monsters, and Classtars, star-shaped emblems that enhance their rider forms with different equipment and skills. Each Classtar is made of two parts: The Class Stone, a round gemstone which determines what kind of abilities it gives, and the Star Ring, a set of points around the Class Stone which determines how powerful it is.

Meanwhile Keiji uses a jitte-like device (which I haven't named yet but I want it to be Japanese-based to contrast with the English-based names of the Runegard items), developed by an Earthling scientist in the supporting cast. At first it's just a weapon, more effective against monsters than ordinary guns but not as good as a Rider, but eventually he's able to use it with a Classtar to transform!

The lower level Classtars could be used by any Rider, so here I'll only list the ones that are more special to that specific Rider:

Viktor:
- Warrior (main form)
- Champion (upgrade form)
- Berserker (penultimate form, berserk until he trains to use it safely)
- Warrior King (final form, accessed with his family's ancestral shield Aegis Arms, which combines with his sword to make... a bigger sword)

Sylvan:
- Wizard (base form)
- Grandmaster (final form, made by combining one of each low-level Classtar)

Keiji:
- Thief (base form, much to his chagrin as a policeman)
- Secret Agent (final form, made by modifying his Classtar with Earthling tech)

Connor:
- Paladin (main form)

Theoretically any Class Stone could have any Star Ring. In the show, Classtars would magically change to the next level up when their user gets strong enough, while in the toyline, the Class Stones would hold all the electronics, and the Star Rings could be detached from them and interchanged. And there would be eight colors of Class Stone - red, orange, yellow, green, cyan, blue, purple, pink - and six ranks of Star Ring - iron (2 points), bronze (3points), silver (4 points), gold (5 points), light (5 points with angel wings), dark (5 points with bat wings) - for a whopping 48 possible combinations, and that's not even counting the unique final forms! Although to reduce it a little, all the iron-level Classtars give the same suit just with different weapons or stats, and are used by rider-like footsoldiers instead of true Riders. Buuut I haven't actually thought out what every level of every class would be, sorry XD But I do have the full progression for each major Rider's favored class! All the others would be either auxiliary forms, less-prominent Riders, or toyline-exclusive.

Red Class (battle):
- Bronze Star Ring: "Class change! Soldier!"
- Silver Star Ring: "Class advance! Warrior!"
- Gold Star Ring: "Class master! Champion!"
- Light Star Ring: "Class ascend! Paladin!"
- Dark Star Ring: "Class unleash! Berserker!"
- Silver Star + Aegis Arms (Viktor exclusive): "Class crowning glory! Warrior King!"

Purple Class (magic):
- Bronze Star: "Class change! Scholar!"
- Silver Star: "Class advance! Wizard!
- Gold Star: "Class master! Archmage!"
- Light Star: "Class ascend! Astrologer!"
- Dark Star: "Class unleash! Necromancer!"

Rainbow Stone w/ Gold Star (Sylvan exclusive): "Class renaissance! Grandmaster!"

Blue Class (stealth):
- Bronze Star: "Class change! Thief!"
- Silver Star: "Class advance! Bandit!"
- Gold Star: "Class master! Outlaw!"
- Light Star: "Class ascend! Spymaster!"
- Dark Star: "Class unleash! Assassin!"
- Tech Star (Keiji exclusive): "Class custom! Secret Agent!"

Any color Class:
- Iron Star: "Class get! Trooper!"

Anyone with enough magic power to become a Rider can use any bronze-level Classtars, but they need to be more skilled with a class to use silver- or gold-level, and need to either draw strength from a higher power for light-level or from their inner demons for dark-level. Iron-level Classtars are only used by the Iron Troopers, the Jadheim Empire's mass-produced footsoldiers recruited from people who don't have enough power to become Riders.