Ultra-Humanite was a genius super-villain with the ability to transfer his mind into other bodies. This made him an enemy to Superman. He was Superman's original nemesis during the Golden Age, making him the first recurring super-villain. In his early career, he was a small crippled scientist who fought Superman using his intellect.
Eventually he would developed a surgical process that allowed him to transfer his original brain into a new body while he sought out a technique to stabilize his ever increasing mind. His chosen form is an albino mutant gorilla that gives him incredible strength.