Warning: Contains spoilers for Peacemaker episode 5.
After Peacemaker episode 4, a number of fan theories circulated about Charlie the Gorilla and James Gunn introducing Gorilla Grodd to the DCEU, but Peacemaker episode 5 makes a joke of the whole situation. James Gunn has made a habit of pulling out obscure characters to include in his superhero adaptations, both for Marvel and for DC. Even in Peacemaker, the show has already quietly confirmed a wealth of strange characters as DCEU canon, including Bat-Mite and Matter-Eater Lad.
Gorilla Grodd is primarily a Flash supervillain who has super-intelligence, super-strength, and various mental powers. Peacemaker episode 4, “The Choad Less Traveled,” includes two background elements that telegraph Charlie the Gorilla’s introduction in a future episode and set fan expectations for Grodd. An extended newscast plays in the background when Peacemaker (John Cena) visits his father’s house discussing how the gorilla was stolen from Evergreen Zoo. Later in the episode, when Vigilante (Freddie Stroma) is getting himself arrested, one of the officers at the jail is reading a paper that notes the gorilla is still on the loose. In Peacemaker episode 5, “Monkey Dory,” Charlie the Gorilla is discovered at the Butterflies’ Glan Tai bottling plant and is dispatched in the same episode by John Economos (Steve Agee) with a chainsaw shortly after the gorilla has yelled, “Die humans!”
Related: Why James Gunn Changed Peacemaker's Origin — Brother Death Explained
Even with the setup and Easter eggs in Peacemaker episode 4, the logic of how Charlie the Gorilla makes sense and is well established in Peacemaker episode 5. Economos explains during his presentation that the Butterflies make humans four
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