The Growing Man! An android created by the extraterrestrial race called the Kosmosians for the time-travelling despot, Kang the Conqueror. Info: http://www.marvunapp.com/Appendix5/growingman.htm and https://en.m.wikipedia.org/wiki/Growing_Man.
As androids go, it is a “stimuloid”: it absorbs kinetic energy, uses it to increase in size, mass, and density, resulting in ever-greater strength, durability, and resiliency. It can be “overloaded” (K.O.’d, in game terms, although I guess that is an opportunity for some specialized gsme effects.) When inert, the Growing Man is “the size of a children’s doll”.
It’s also been shown to duplicate itself, a Giant or Colossal Growing Man “breaking apart” into a dozen or so mini-GMs, each able to grow.
A lot of possibilities for a rarer, higher-end “generic”? Would love to see Tiny-symboled Growing Man clix, with Morph ability into ever-larger forms.
Other than the “hook”, it’s *just* another brutish brawler, manipulated into combat by characters from Kang to Baron Wolfgang von Strucker of HYDRA.