- Hamish Clarke
- Jonathan Kent / Powerhouse
- Carole Day
- Sarah Kent
- Richard Pearce
- Jo-Elman / OG Powerhouse
- Emily Michaels
- Ruby Sawyer / Reign
- Helen Grant
- Martha Kent
- Gary Mckenzie
- Alex 'Lex' Anderson
- David Harper
- John Jones / The Manhunter
- John Danvers
- Dr. Philip Kent
- Jeremy Jones
- James Schott / Computer Lad
- Jamie Smith
- Henry Kent / Powerboy
- Jamie Jarvis
- James Matthew / Defender
- George Wood
- Arthur Wood / Protector
- Richard Anderson
- Perry Black
- Nicole Sullivan
- Kate Barlow
- Jenna Dawn
- Lucy Lane
- Chad Michaels
- Thomas Graves
- Graham Parkhurst
- Sebastian
- Thomas Grant
- Sebastian Duncan
- Henry Price
- Young Jonathan
- Matthew Baker
- James Armitage
- Andre Harris
- Lightning Black
- John McDonald
- David Bishop
- Nic Sampson
- The Emerald Archer
- Peter Vance
- Max Lord
- Chris Ward
- Mike Matthews / Valor (uncredited)
