El Pollo Diablo, or the Giant Demon Chicken, is a mythical creature, said to have landed on Plunder Island, where he terrorizes the people. Tall as a man and twice as powerful, his massive drumsticks propel him through the dark jungle with ease. On the eve of the full moon, his blood-curdling squawk can be heard from every corner of Plunder Island. It is believed that one day, he will roam the island, exacting terrible vengeance on those who would capture and eat his smaller brethren. Captain Blondebeard believes that El Pollo Diablo is responsible for releasing his chickens from their coops, hurting his business.
During The Curse of Monkey Island, Guybrush Threepwood becomes tarred and feathered by Mr. Fossey and the Pirates of Danjer Cove, and wherever he goes the townspeople of Puerto Pollo want to kill him, except for Kenny Falmouth who simply refuses to do business with him since he can't take him seriously.
El Pollo Diablo appears to be a legend of Spanish origin, as suggested by its name. It is also known to be capable of communicating verbally, as Guybrush can utter a threat to Blondebeard in both English and Spanish. This seems to convince Blondebeard even further that Guybrush is El Pollo Diablo, enough so that the paranoid pirate chef renders him unconscious and ships him back to Mr. Fossey as fried chicken takeout.
The grease from the chicken bucket is strong enough to dissolve the tar holding the feathers to him, ending Guybrush's brief stint as El Pollo Diablo.
- Captain Blondebeard: Madre de Dios! Es el Pollo Diablo! (Holy Mother of God! It's the Devil Chicken!)
- Guybrush Threepwood: ¡Sí! ¡He dejado en libertad los prisioneros y ahora vengo por ti! (Yes! I have released your prisoners and now I've come for you!)