Radio Active is the English language adaptation of the French language, "Radio Enfer".
Before the cast change in Season 2, Vik Sahay was the only cast member to appear in every episode of Season 1.
Giancarlo Caltobiano, Lucinda Davis, Melissa Galianos, Vanessa Lengies, Susan Glover and Robert Higden are the only cast members to appear in all 3 seasons, the Pilot and Series Finale.