▁Crow ' s ▁voice . ▁ ▁Origin ally , ▁it ▁was ▁somewhat ▁baby ish , ▁with ▁a ▁pron ounced ▁Minnesota ▁acc ent . ▁ ▁By ▁season ▁two , ▁Crow ' s ▁voice ▁had ▁become ▁more ▁sharp . ▁Upon ▁Trace ' s ▁departure , ▁Brook lyn - ra ised ▁Bill ▁Cor b ett ▁took ▁over ▁Crow ' s ▁operation . ▁Cor b ett ▁j ok ingly ▁mentioned ▁that ▁during ▁his ▁time ▁alone ▁on ▁the ▁S OL ▁Crow ▁suffered ▁a ▁stroke , ▁thus ▁explaining ▁the ▁change ▁of ▁his ▁voice ▁and ▁his ▁initially ▁less - than - gra ce ful ▁handling ▁of ▁the ▁pu ppet . ▁Despite ▁initial ▁concerns ▁from ▁the ▁fan base ▁regarding ▁Be a ul ieu ' s ▁departure , ▁the ▁reception ▁for ▁Cor b ett ' s ▁performance ▁was ▁very ▁positive ▁and ▁he ▁quickly ▁became ▁a ▁fan ▁favorite . ▁The ▁show ' s ▁writers ▁later ▁made ▁a ▁jo ke ▁of ▁the ▁change ▁in ▁episode ▁ 9 0 4 , ▁W ere w olf , ▁by ▁suggesting ▁that ▁Crow ' s ▁inher ent ▁characteristics ▁included ▁a ▁change ▁of ▁voice ▁every ▁seven ▁years . ▁When ▁Jo el ▁H od g son ▁returned ▁for ▁a ▁guest ▁spot ▁in ▁episode ▁ 1 0 0 1 , ▁Sou lt aker , ▁he ▁off hand edly ▁suggests ▁that ▁Crow ▁" changed ▁his ▁bow ling ▁pin " ▁( that ▁is , ▁his ▁mouth ). ▁From ▁Season ▁ 8 ▁on ward , ▁in ▁the ▁opening ▁theme ▁during ▁the ▁" Rob ot ▁Roll ▁Call ", ▁Crow ▁can ▁be ▁heard ▁exc laim ing