Elmo
Elmo is the leader of the Loonies in the game Grand Theft Auto 2. Elmo is possibly mentally ill or just drugged up. The Loonies owe the Yakuza large sums of money but Elmo refuses to pay. Claude, under orders of Johnny Zoo, destroys the Loonies "Happy" gas tanks to send Elmo a message. Elmo than enlists Claude's help to destroy the Yakuza. After giving Claude several missions to establish trust, Elmo tells Claude to gas a Yakuza front which results in many of them becoming mentally ill. Both the Yakuza and the Loonies were weakend by Claude as he was working for all 3 gangs in the district. Elmo, Johnny Zoo, and Trey Welsh attack Claude, but they all end up getting killed.
Elmo's name is an obvious reference of the character from "Sesame Street".