Special Guest Stars Maurice LaMarche voices Orson Welles Stephen Fry voices Terrance Stephen Fry voices Head of MI5 Stephen Fry voices Terrance's Father Stephen Fry voices Hazel Guest Stars Alex Désert voices Carl Carlson Tress MacNeille voices Olive Robin Atkin Downes voices MI5 Agents Kevin Michael Richardson voices MI5 Agents Brian George voices MI5 Agents Pamela Hayden voices Retirement Castle Lady Chris Edgerly voices Out-Of-Breath Old Man Dmitry Malanitchev voices Russian See 'N Say