Bucky Buchanan (Zombies & Cheerleaders)

Luca “Chad” Merus who is Bucky’s evilier counterpart is the secondary antagonist on Zombies and Cheerleaders.

Trivia
Luca is revealed to be Monika's brother in the DDLC game.

He is Troy Bolton's Friend back in High School 3 and he is actually "Jimmie the Rocket man"