Here are the main cast members for both versions:
British Version (1985):
* Matt Frewer as Max Headroom (voice and physical performance)
* Gordon Kennedy as Edison Carter
* Debby Bishop as The Network's "Girl"
* Clive Mantle as The Network's "Man"
American Version (1987):
* Matt Frewer as Max Headroom (voice and physical performance)
* Jeffrey Tambor as Edison Carter
* Amanda Pays as The Network's "Girl"
* Christopher Malcolm as The Network's "Man"
It's worth noting that the American version used the same basic format as the British version, but the specific details and storylines were changed. The American version also had a slightly more comedic tone than the British version.
While the original Max Headroom was played by the same actor, Matt Frewer, for both versions, the other characters were recast with different actors.