[Snowflakian]

So far we've seen
Captain america
Klaw
Spiderman red blue
Thunderball
Brown Suit wolverine
Classic Human Torch
IronMan
Spiderwoman
Black suit spider-man
Magneto
Classic Cyclops
Kirby esque hulk
Classic Thor
Classic Enchantress
Ultron
Blue white Mr. Fantastic
Classic Hawkeye
Piledriver

With allegedly coming in the wave 4
Doctor Doom
Thing
Mohawk Storm
Bulldozer

Last two are still officially unknown.
The only thing is it has to be Secret wars era costume, and present during the occurence.

Lotsa people are saying wrecker, we still have one unaccounted for colossus mold, and that's about all the clues we have besides who all they can repaint from who, and what issues are left go to who.