Even though he only appears briefly in a few issues. I absolutely love the villian Jack from Grant Morrisons Doom Patrol. You never get to fully understand who or what he is other than that he claims to be Jack the Ripper but you know also God. What I like about the character is just how well it does with concept of a God complex. Most likely Jack was a serial killer and most likely the actually Ripper who somehow ended up in a dimension that either drove him insane or helped personified his delusional thoughts. All that time in this dimension being able to alter things at a whim quickly lead to a character believing they are God. And in this dimension, may very well be right. Also I just love how he says it so matter-of-fact.