Guest Stars Joseph May voices Additional Voices Credit Only Nicole Oliver voices Kevin's Mom Scott McNeil voices Ace the Bat Hound Scott McNeil voices Ignatius Tabitha St. Germain voices Andrea Tabitha St. Germain voices Melanie Kelly Sheridan voices Mammoth Mutt Alberto Ghisi voices Kevin Phil Hayes voices Additional Voices Michael Dobson voices Bulldog Brian Drummond voices Kevin's Dad Brian Drummond voices Streaky Ellen Kennedy voices Brainy Barker Dale Wilson voices Paw Pooch Russell Roberts voices Additional Voices Matt Hill voices Additional Voices Kathleen Barr voices Additional Voices Shannon Chan-Kent voices Additional Voices Paul Dobson voices Additional Voices Kirby Morrow voices Additional Voices Jay Brazeau voices Additional Voices Lee Tockar voices Stretch-O-Mutt Gabe Khouth voices Additional Voices Aidan Drummond voices Additional Voices Michael Donovan voices Additional Voices Christopher Gaze voices Additional Voices Don Brown voices Additional Voices Mark Acheson voices Additional Voices Bill Mondy voices Additional Voices Uncredited Mark Oliver voices Mechani-Bot