He was voiced by Dee Bradley Baker.
Fayvoon's physical alien appearance resembles a green dinosaur with the exception of his pickaxe-shaped head and his chameleon-like eyes that protrude from their sockets.
Fayvoon took part in the attack on the Benbow Inn, evidenced by his shadow revealed from the inn's lamps. During the voyage, the ship encounters a supernova. While securing lifelines of all pirates so that they will not get lost, Jim saves Silver from falling just in time. The supernova then devolves into a black hole, where Arrow falls to his death. The burst of shock waves and maximum engine power enable Amelia to pilot the ship to safety. Amelia mourns the loss of Arrow, and suspects Jim of failing to secure the lifelines, while Arrow's line was actually cut by the most dangerous insectoid alien named Scroop. He is also one of the first three pirates, the other two being Longbourne and Hands to die in the film, when a misfire from Doppler resulted in falling debris, destroying the floorboards, and sending the pursuing pirates falling out of the ship's longboat room from a great height to their apparent deaths. It is unknown if Fayvoon and his fellow pirates survived the fall or not, but even if they survived, it is highly suspected that they were severely and mortally injured by it or were eventually and definitely killed when Treasure Planet was blown up by Captain Flint's trap.
- In the book Treasure Planet: A Voyage of Discovery Fayvoon is described as being dumb as dirt.