Fourmageddon and the snake/lizard wrestler seemed to be based off of Goro and Reptile.
#Regular show the movie ending professional
In "Really Real Wrestling", Fourarmageddon slapping Mordecai and kicks Rigby while asking 'Is this fake?' due to them claiming it as such is a Shout-Out to the infamous 20/20 interview where David Schultz slaps John Stossel twice for claiming Professional Wrestling to be fake, asking him was the slap 'fake' each time.The zombie chick who almost bites the main character before Rigby bumps into the projector might be a nod to the "horror hags" from the original The Evil Dead (1981).And on the video game side, the ultra-strong zombie at the end is similar to the Tank from Left 4 Dead.Mordecai tries to rent an Italian film called Libraria, Zombocalpyse strongly resembles Army of Darkness complete with Bruce Campbell lookalike hero, the cover art of Zombocalypse resembles Doom, the shot of the zombies reanimating in their graves looks similar to The Return of the Living Dead, and the concept of a movie creating zombies might be a reference to Demons.