Guest Stars Tom Hughes as Jonty Millingden Liam Bergin as Rupert Tara Ward voices Avalon Rod Arthur as Pete Dobkin Saif Alfalasi as Vigor David Oakes as Ross Bonham Anthony Hoskyns as Seifert Mark Aiken as Mr. Pearce Nicholas Sidi as Richard Arc Trevor Laird as Barrington MacKenzie Doreene Blackstock as Neatha MacKenzie Karen Ascoe as Mrs. Arc Uncredited Simon John Wilson as Student
