Alpha: Characters (S1)

Main Characters:
 * Sif Hunderson (Aaron Taylor-Johnson)
 * Detective Bradly Nicholas "Brad" Monday (Troy Baker)
 * Chelsea Wayne (Janet Varney)
 * Tronn (Greg Baldwin)
 * Magister Robert Conroy (Kevin Conroy)

Recurring Characters:

 * Detective Alan Wright (Don Cheadle)
 * Kenneth Greene 
 * Martha Greene 
 * General James Conroy (Robin Williams)
 * Weasel (Joe Pantoliano)

Antagonists:

 * Alphamaster  (Kiefer Sutherland) Active
 * Mayson Monday (Robert Sean Leonard) Active
 * The Magicians
 * Spellbinder (Leader) (Corey Burton) Active
 * Charmcaster (Kari Wahlgren) Active
 * Maler Active
 * Exponentia Active
 * Angel Wings (Jonathan Rhys Meyers) Active
 * Netheren Active
 * John Earl Smith/Heartbreaker (Robert Knepper) Active
 * Jane Ayer/Huntress (Grey DeLisle) Active
 * Khyber The Huntsman (Leonard Nimoy) Active
 * Inferno Guardians 
 * General Anci Swift Active
 * Commander Qwan Chow (Chin Han) Active

Flashback/Mentioned

 * Vilgax the Conqueror