Guest Stars David Hemblen voices Magneto David Fox voices Sentinels Barry Flatman voices Henry Peter Gyrich Brett Halsey voices Bolivar Trask David Fox voices Master Mold Credit Only Jeremy Ratchford voices Various Jennifer Dale voices Various Stuart Stone voices Various Adrian Egan voices Various George Merner voices Various Ross Petty voices Various Graham Halley voices Various Catherine Gallant voices Various Paul Haddad voices Various Dan Hennessey voices Various Kay Tremblay voices Various Rick Bennett voices Various Lally Cadeau voices Various John Colicos voices Various Lawrence Bayne voices Various Philip Akin voices Various Marc Strange voices Various Ron Rubin voices Various James Millington voices Various Rod Coneybeare voices Various Robert Cait voices Various Randall Carpenter voices Various Judy Marshak voices Various Don Francks voices Various Stephen Ouimette voices Various Uncredited Chris Britton voices Mister Sinister Len Carlson voices President Kelly