A horror-movie-style monster that appeared in a dream, decades ago.

A primeval demon lord who was the Big Bad of an older story arc in King of Fighters fighting video games.

The original, 1940s one. An agent of “Satan” with infernal powers… who oddly acts just like a Golden Age killer vigilante.

Skeletor was the evil bad antagonist in the notable 1980s animated series, He-Man and the Masters of the Universe. Old people fondly reminisce about him. Who can figure these guys out, heh. How do you do, fellow kids ?

Two demon-like, shape-shifting sisters who organise death duels between great warriors from any universes. They’re, like, a crossover engine. The Corvidae appeared in Gail Simone and Aaron Lopresti’s Wonder Woman vs. Conan mini-series.

A weird, crazy Iron Man enemy from 1971 and the strange “Assassin” story line. It was… something, it really was.

The towering, real-hard-to-kill, rockets-spewing endgame demons in the 1990s DooM video games.

From the 1990s Doom video games, the big pink humanoid bull gorillas and the invisible ones.

The little faeces-coloured guys with the fangs and small fireballs and electrified spikes in the 1990s Doom video games.