Proxy One

[Spoiler] The main antagonist of the series, he is also Ergo Proxy, and calls Vincent his shadow. First alluded to in episode 15, he is the one behind the events of the entire series, having created Vincent and then sending him back to Romdo to start his plan. He is revealed to be the one who fired the thermonuclear missile Rapture, destroyed Amnesia to hide Vincent's memories and killed Donov Meyer, though all of this isn't revealed till the end. In the end, he is killed by a combination of Vincent's attacks and sunlight. [/Spoiler]

(Source: Wikipedia)