Guest Stars Kathleen Barr voices Isis Cathy Weseluck voices Katy Credit Only Scott McNeil voices Ace the Bat Hound Scott McNeil voices Ignatius Nicole Oliver voices Kevin's Mom Tabitha St. Germain voices Andrea Tabitha St. Germain voices Melanie Kelly Sheridan voices Mammoth Mutt Peter Kelamis voices Tail Terrier Phil Hayes voices Additional Voices Alberto Ghisi voices Kevin Brian Drummond voices Kevin's Dad Michael Dobson voices Bulldog Trevor Devall voices Hot Dog Nicole Bouma voices Snooky Wookums Dale Wilson voices Paw Pooch Terry Klassen voices Tusky Husky Ellen Kennedy voices Brainy Barker Mark Oliver voices Mechanikat Russell Roberts voices Additional Voices Matt Hill voices Additional Voices Mark Hildreth voices Additional Voices Alvin Sanders voices Additional Voices Lee Tockar voices Additional Voices French Tickner voices Additional Voices Reece Thompson voices Additional Voices Louis Chirillo voices Additional Voices Noel Callaghan voices Additional Voices Pam Hyatt voices Additional Voices Dave Ward voices Additional Voices Ty Olsson voices Additional Voices Colin Murdock voices Additional Voices Michael Daingerfield voices Additional Voices Janyse Jaud voices Additional Voices Brian Dobson voices Additional Voices Danny McKinnon voices Additional Voices Uncredited Kelly Sheridan voices Princess