Foxy has a rustic voice and is deep, he sounds very pirate-y and is energetic.

Foxy is a large, animatronic fox with crimson tattered fur. He has yellow eyes, red eyebrows, and three strings of hair from the top of his head. He has a hook for his right hand and his left hand has been worn down to the endoskeleton. ... Like all of the other Fazbear characters, Foxy has a set of teeth. He also has a beard and a pirate's hat to symbolize that he is indeed a pirate.