When Joe invents a new super battery, it catches the attention of Professor Polonium and her trusted but rather silly sidekick Dr Crumpton.
Denise Van Outen
as Professor Polonium
Steven Kynman
as Sam / Elvis / Charlie / Norman (voice)
John Hasler
as Arnold / James (voice)
Colin McFarlane
as Malcolm Williams / Map-Screen 700
David Carling
as Station Officer Steele / Mike Flood / Tom Thomas / Trevor Evans (voice)
Kerry Shale
as Doctor Crumpton (voice)
Sasha Behar
as Rose Revani (voice)
Alex Lowe
as Joe Sparkes (voice)
Tegwen Tucker
as Penny / Sarah / Bronwyn / Mrs. Chen / Teleprinter / Map-Screen 700 (voice)
Harriet Kershaw
as Ellie / Bella / Scoop Dooley (voice)
Su Douglas
as Dilys / Mandy / Helen (voice)
Nigel Whitmey
as Moose Roberts (voice)
