| Name (Sort) | Character (Sort) | |
| •Patricia Arquette | played | Special Agent Avery Ryan (13Eps.) |
| •Bow Wow | played | Brody "Baby Face" Nelson (as Shad "Bow Wow" Moss) (13Eps.) |
| •Charley Koontz | played | Agent Daniel Krumitz (13Eps.) |
| •Hayley Kiyoko | played | Raven Ramirez (11Eps.) |
| •James Van Der Beek | played | FBI Agent Elijah Mundo (13Eps.) |
| •Peter MacNicol | played | Assistant Director Simon Sifter (S01) (13Eps.) |
| •Ted Danson | played | Diebenkorn "D.B." Russell (S02 -) |