in ▁the ▁world ▁by ▁removing ▁all ▁green ery ▁and ▁poll uting ▁water c ourses ▁with ▁chemical s . ▁He ▁we ars ▁a ▁smart ▁pur ple ▁suit . ▁He ▁is ▁vo iced ▁by ▁Keith ▁W ick ham ▁ ▁Sm og g ▁– ▁A ▁black ▁cat ▁who ▁is ▁lazy , ▁he ▁is ▁Pol l uto ' s ▁side k ick . ▁Sm og g ' s ▁wh isk ers ▁are ▁bent ▁and ▁he ▁has ▁a ▁huge , ▁che ek y ▁smile . ▁He ▁is ▁vo iced ▁by ▁Nick ▁Mer cer . ▁ ▁Other ▁Char acters ▁These ▁all ▁appear ▁in ▁the ▁live - action ▁segments . ▁ ▁Real ▁Life ▁Tommy ▁– ▁C aus es ▁problems ▁around ▁the ▁house ▁before ▁transform ing ▁into ▁Tommy ▁Zo om , ▁never ▁speak s , ▁played ▁by ▁Nathan iel ▁G le ed . ▁ ▁Real ▁Life ▁Daniel ▁– ▁N arr ator ▁of ▁the ▁story . ▁played ▁by ▁Mol son . ▁ ▁M um ▁– ▁Sometimes ▁seen ▁walking ▁around ▁the ▁house , ▁never ▁speak s , ▁played ▁by ▁Jo anne ▁Cr iss . ▁ ▁D ad ▁– ▁Sometimes ▁seen ▁walking ▁around ▁the ▁house , ▁never ▁speak s , ▁played ▁by ▁Richard ▁Mo ody . ▁ ▁Baby ▁Sam ▁– ▁Sometimes ▁seen ▁e ating ▁at ▁the ▁table . ▁Sometimes ▁laugh s , ▁but ▁never ▁speak s ▁and ▁played ▁by ▁No ah ▁L idd ell ▁and ▁Sam ▁L idd ell . ▁ ▁Girl ▁On ▁Bi ke ▁– ▁In ▁one ▁episode ▁she ▁was ▁r iding ▁her ▁bi ke ▁beside ▁Tommy , ▁never ▁speak s , ▁played