Dr. Victor Von Doom

Dr. Victor Von Doom(Dr. Doom for short), Is the "infamous iron man" Fighting alongside Dr. Doofenshmirtz, but then betraying him.An Epic Chat 3:

Dr. Doom joins Thanos's forces.

Epic Chat 11: Timeline Chaos

After An Epic Chat 10, the truth came out that doctor doom was the one responsible for Carl Wheezys death.