The Joker by Bruce Timm (Also proof you're a 90's kid. You see this and think "Mark Hamill")
General Grievous - Star Wars
F.R.E.A.K.S. F.R.E.A.K.S. // Poison Ivy // Cat Woman // The Joker // Harley Quinn // Riddler // Two Face
joker by Bruce Timm
Maniac Monday: Ultron Art by: Unknown Ultron-1 was constructed by Dr. Hank Pym of The Avengers as the famed scientist/adventurer was experimenting in high-intelligence robotics. Ultron became sentient and rebelled, hypnotizing Pym and brainwashing him into forgetting that Ultron had ever existed. He immediately began improving upon his rudimentary design, quickly upgrading himself several times to become Ultron-5.