Alpha: Characters (S2)

Main Characters:

 * Sif Hunderson (Aaron Taylor-Johnson)
 * Detective Bradly Nicholas "Brad" Monday (Troy Baker)
 * Chelsea Wayne (Janet Varney)
 * Neil Bartholomew Merchant (Jimmi Simpson)
 * Ann "Anna" Donovan (Olivia Wilde)
 * Mike (Dan White)

Recurring Characters:

 * Detective Alan Wright (Don Cheadle)
 * Kenneth Greene (Gavin Hammond)
 * Martha Greene
 * Weasel (Joe Pantoliano)
 * Risky (Dee Bradley Baker)
 * Asonn (Dave Fennoy)
 * Tronn (Greg Baldwin)
 * Dennis Menendez (Antonio Banderas)

Antagonists:

 * Acenturian (Chris Pratt)
 * Qwan Chow (Chin Han)
 * Unknown/Kessler (J.K. Simmons)
 * Masquerade (Robin Williams)
 * The Magicians
 * Spellbinder (Leader) (Corey Burton) Active
 * Charmcaster (Kari Wahlgren) Active
 * Maler Active
 * Exponentia Active
 * Netheren Active
 * Fis (Eric Bauza)
 * Jane Ayer/Huntress (Grey DeLisle)
 * Kris Blackstone
 * Shades Dax/Penance (Benedict Cumberbatch)
 * Sinthea Brock (Lara Pulver)
 * Ilah Park (Tara Strong)

Flashback/Mentioned/Specials

 * Mig Rivers (Greg Cipes)
 * Fate (Wil Wheaton)
 * Dan Rivers (Paul Eiding)
 * Alphamaster (Kiefer Sutherland)
 * Khyber (Leonard Nimoy) Active
 * Angel Wings (Jonathan Rhys Meyers)