Jason LeeShoeshine / Underdog (voice) Peter DinklageDr. Simon Barsinister Amy AdamsPolly Purebred (voice) Brad GarrettRiff Raff (voice) Timothy CrowePolice Chief Larry VigusSecurity Guard Mario MarianiPolice Officer Alexander 'Alex' GardeSmall Boy Christopher Francis ByrnesMailman (as Christopher Byrnes) Joe SirianiNews Stand Guy (as Joseph Siriani) Michele ProudeOffice Worker #2 Albert M. ChanGeek Worker Susie CastilloDiana Flores Bruce-Robert SerafinCity Worker (as Bruce Serafin) Anthony EstrellaMale School Teacher (as Tony Estrella) Malik McMullenBomb Squad Officer Lewis D. WheelerGeek with Glasses Ellen WithrowFemale Teacher Frank RidleyPolice Sergeant Courtney O'ReaganCollege Girl Rebekah AraminiFox Collar Lady Richney FischerBaseball Dad Joe StapletonCat Burglar Police #1 Armen GaroCat Burglar Police #2 Daniel KirbyNews Director Stephen James KiddBomb Squad Member (as Steve Kidd) Diana ShneiderPolice Secretary Bob BoehmBomb Squad Officer #2 (as Robert Boehm) Lincoln P. SissonBomb Squad Officer #3 Harry L. ThomasPolice Artist Nicole KopkaJogger in Park Adam McCarthyCapitol City Security Roy SouzaCapitol City Cop Tom PaolinoCapitol City Cop Scott DittmanHot Dog Contestant Chris Andrew CiullaFireman (as Chris Ciulla) Phil MorrisSupershep 1 (voice) Michael MasseeSupershep 2 (voice) Cam ClarkeLittle Brown Dog / Supershep 3 (voice) John DiMaggioBulldog / Supershep 4 (voice) Danny MastrogiorgioCrazy Dog (voice) Jess HarnellAstronaut (voice) John FranchiObserver (uncredited) Susan GarfieldOffice Worker (uncredited) Michael Tyler HenryJack Unger (voice) James F. TruesdaleArt Direction Maggie MartinSet Decoration Garreth StoverProduction Design David EggbyDirector Of Photography Peggy NicholsonHair Department Head Joe RossiMakeup Department Head Ellen M. HillersSecond Assistant Director Philip A. PattersonFirst Assistant Director Bob BrownSecond Unit Director Charles Martin InouyeSupervising Music Editor Tanya Noel HillMusic Editor Donna E. BloomUnit Production Manager Gail GoldbergCasting Director Montez A. MonroeProduction Coordinator Andy FowlerVisual Effects Producer Hoyt YeatmanVisual Effects Supervisor Mark DornfeldVisual Effects Supervisor Rob DuncanVisual Effects Supervisor Ben ShepherdVisual Effects Supervisor Gayle BusbyVisual Effects Producer