Alien android, Superman's intellectual nemesis. Green skin, pink diodes on head. Superhuman intellect, technopathy, physical enhancements. Obsessed with collecting and preserving knowledge and cities. Cold, logical personality. Views organic life as inefficient. Constantly upgrades self. Multiple incarnations across time/space. Struggles with concept of emotion, creativity. Meticulous planner, always has contingencies. Represents threat of technology without ethics. Sometimes allies with heroes if logically beneficial.