27 MAY 2011 - PHOENIX, AZ: Members of the Arizona Avengers, a local group of comic heros, pose for photos at Phoenix Comicon Friday. Phoenix Comicon opened Thursday and featured a Zombie Walk through downtown Phoenix Friday night. Hundreds of people participated in the Zombie Walk, both as Zombies and as Zombie hunters. This year's Comicon includes appearances by Leonard Nimoy (Star Trek), Adam Baldwin (Firefly and Chuck), Stan Lee (Marvel Comics), Nicholas Brendon (Buffy the Vampire Slayer) and others. Activities include costuming workshops, role playing games and a Geek Prom. Photo by Jack Kurtz