20 Most Terrifying Enemies In Video Game History

12. Walter Sullivan - Silent Hill 4: The Room

Walter Sullivan is a serial killer driven by an obsessive need to fulfil the 21 Sacraments; a ceremony that requires him to 'sacrifice', you guessed it: 21 victims. He also believes the room he once lived in - the apartment currently inhabited by Henry Townshend, the game's protagonist - is his mother.

Yeah, ol' Walter's definitely an original. And while the man's murders and methodology alone are enough to guarantee him a special place in the seventh circle - serial killers aren't exactly the kind of people you invite over for dinner (although that probably depends on what's being served, I suppose) - what really cements Walter's place on this list is the fact that Silent Hill 4's otherworld is a direct manifestation of his twisted little mind.

We're talking about an entire alternate reality mapped to a serial killer's impulses and fantasies - is there any way that's NOT utterly horrifying? When a monstrosity made from the conjoined bodies of two infants is one of the "tamer" things you'll come across, you know you're in hell.

And those are just two of Walter's victims...