Mr. Rooster, aka Señor Gallo, was originally a bird with no name, although on the character design sheets, was billed as 'Nathan.' As of 2008, however, the character was officially dubbed 'Trevor' to reflect the director's affinity for 80s New Wave group, the Buggles.
Trevor Chicken makes a cameo appearance as a puppet character in Remember Me (2009) also directed by 'Alyssa Barber'.