Metallo
What do you think about the robot Comic Character known as 'Metallo' that uses kryptonite as its power source?
Metallo was one of the lamest characters in the DC universe. I know allot of people who thought he was a cool opponent, but I thought a robot powered by Kryptonite was lame. The only reason he was even a threat was the kryptonite which made this a re-mold of the same old Lex Luthor plots, kill superman with kryptonite somehow.