The Thing

 Real Name: Ben Grimm

The Thing is a member of the Fantastic Four, part of the space exploration team of Reed Richard's who were exposed to Cosmic radiation.  The radiation affected each member differently; in the case of pilot Ben Grimm, it transformed him into a super-strong behemoth with orange rock-like skin.  The Thing possesses extraordinary strength and durability, virtually equal to heavy hitters like Thor or the Hulk.