[kamen rider bara]

I think the best are the undead, I mean they look like dangerous monsters, worst I would say is yummy, the look bad

[Sentai]

The Grongi from Kuuga have to be the absolute best.

[XW1n5t0nX]

The Orphenochs are some of the best kaijin I have ever seen. As for worst, probably the Worms or the Unknown/Overlords from Agito (except for the two near the end).

[Powerman293]

Best: Undead ,Grongi, Orphenochs

Worst: Mirror Monsters. Outside of the contract monsters, the monster designs were terrible. And yes, I know there's a story reason as to why they look that way but it still doesn't make them any better.

Normal Invess. Not the Overlords just the normal ones, mainly due to the recycling of previous monster designs. The low levelk ones look like the baby Worms, that deer one looks the the Thunder Deer from Blade, e.t.c.

[MaskedRiderAsakura]

Orphenochs were the best for me. As for worst, I'd say the normal Inves as well.

[Switchblade]

My favorites are the Lords from Agito. A lot of those designs are just brilliant. I'm also a big fan of the Undead, the Grongi, the GOD mythological monsters, the Gorgom monsters, and the Fangire. I'd like the Orphnochs a lot more if they had color - the monotone gray really dulls a lot of the detail.

My least favorites are probably the Yummies from OOO. Never got into those designs. I'm not a big fan of the Phantoms or Imagin, either. And I'm not even going to give any credit to the half-assed designs someone pulled out of a scrapped ideas drawer for the last part of Hibiki.

[ElConvoy]

My favorite Kaijin designs are by far the Dopants. They are all very creative and I just love their esthetic.

For worst I claim the later Hibiki Kaijin. They are just so dumb and uninspired.

[henshinzero]

Best designs: Greeed, zodiarts, phantoms, orphenoch & undead

Worst designs: Fangire & Worm

[Locke]

Both Wizard and Gaim have really suffered in my opinion for having monsters that look like suits, but this is maybe how it'll just be now we have such high definition camera equipment and like Kuuga it'll have to push to hide the seams once again.

For all out worst though, I gotta say Hibiki's. Not all that far in, but so far all of the monsters have looked the same, all of them look like they have had no effort put in at all and they are just shit.

The Orphenoch were nice, but the lack of colour undermined some of the designs in my opinion. In story reasons or not, for the lack of colour. I really liked the Undead too because some were genuinely terrifying, some were laugh out loud ridiculous and others felt like they really pushed the boundaries of what you could do with kaijin suits - but like with Hibiki I've only seen the early episodes.

[Matrixbeast]

For the worst, I'mma have to give it to Gaim. The repetitive suits aren't anything special and the smaller Invess never really looked good, I thought. The Overlords do bring a little more, but only one of them really looked "Good" to me. The others are just meh...

Best? Hm...I think I'll call either Blade's Undead or Den-O's Imagin as the best looking monsters. The Undead just click with me, personally, while the Imagin are really bright and just look nice overall.