Hellboy

First appearance: Hellboy (2004)

Guillermo Del Toro brings Mike Mignola's pulptastic monster fighting comic to the big screen for the first time.
Summoned by a weird occult machine by Rasputin for the Nazis, a weird little demon is intercepted by Professor Bruttenholm and the allied forces. The demon is adopted by the professor named "Hellboy" and raised in Bureau of Paranormal Research and Defence, away from the prying eyes of everyone. Hellboy hangs out with a fishman and a pyrokenetic and they fight monsters and stuff.
But little do they know Rasputin's trying to summon some giant tentacle monsters from another dimension and Hellboy's the key!