Doc Ock via Playskool. I've always been a fan of Doctor Octopus. I remember seeing him on the cardbacks of my Secret Wars action figures (I had Doom, Iron Man and Wolverine) and really wanting to add him to my modest collection. But alas it never happened.
This kiddie Playskool version of the good Doctor is tops, I love his mechanical arms, they give this guy a literal extra dimension that makes him stand out against the other heroes and villains in the line. Of the few Playskool Marvel figures I own, this guy has fast become my favorite.