Tim Allen Buzz Lightyear (voice) Nicole Sullivan Mira Nova (voice) Stephen Furst Booster Muchapper (voice) Larry Miller XR (voice) Adam Carolla Commander Nebula (voice) Patrick Warburton Little Green Men (voice) Wayne Knight Evil Emperor Zurg (voice) Diedrich Bader Warp Darkmatter / Agent Z (voice) Kevin Michael Richardson Space Ranger (voice) Charles Kimbrough Brain Pod #29 / Rhizomian Man (voice) Frank Welker Grubs / Self Destruct / Ranger #1 / Cadet Flam (voice) Sean Hayes Brain Pod #13 (voice) Jim Hanks Sheriff Woody (voice) Wallace Shawn Rex (voice) Andrew Stanton Hamm (voice) R. Lee Ermey Sarge (voice) Joe Ranft Wheezy (voice) Jeff Pidgeon Aliens (voice)