Gougey

His head appears to be the skinless skull of an deer or similar mammal. He wears a dark tuxedo and carries a devil-like trident. He also has a small deer-like tail sticking out of the back of his pants.

He tries to act threatening, but he's actually harmless and incompetent. He often get into arguments with Stabby, his partner (in work...) and they fail to complete the simplest of tasks.
Stabby is depicted as having a short temper (or just being what one could consider as rude/immature) and Gougey/Shooty being the one to calm him down.

They both speak with a Brooklyn accent and slang, it's unknown if they are or aren't actually from Brooklyn. This could be another attempt to appear threatening, or to fit the movie-mob-boss stereotype.

Gougey works in Dietown selling souls to hell. He can create things at will as a demon, but he is limited because otherwise he would misuse them.

Rather than taking place on Valentine's Day, Dietown takes place on Rapture Day. Dialtown has turned into a red hellscape in God's absence, and you as a literal, nameless demon. All backgrounds and sprites have a red overlay, some unique sprites and background animations. A number of characters are different here.