I'm probably in the minority, but for me it's Stegman. One could maybe blame Joffrey's psychopathy on his inbred parentage; Stegman has no such excuse, plus he's a rapist.

Stegman was spoiled too. Notice how his mother defended him when Dean Norris tried to enter his apartment.

Both were spoiled by their mothers, but Joffrey's parents are literally twin siblings. Being inbred can actually cause serious mental illnesses like bipolar disorder or schizophrenia. It's a miracle Myrcella and Tommen didn't turn out the same way TBH.

Lol yes. But Stegman is even crazier. He bangs his head against the glass just to frame Dean, spends the entire movie tormenting him in every way, paints his face with lipstick after kidnapping Dean's wife, expresses strange beliefs, etc. He surely had to go through a disturbing time to be so deranged.

Joffrey hadn't committed mass infanticide? I think it's easily he's more evil

Joffrey, Stegman would probably be closer to someone like Monty de la Cruz, Alex DeLarge or Patrick Hockstetter. Joffrey is a mass murderer of even children.

Joffrey holds power over life and death. Peter is nowhere near that dangerous.

Junko Enoshimas another fucked up teen.