Final 9 Regular Show Episodes

Main Characters:

 * Mordecai (Voiced by J.G. Quintel)
 * Rigby (Voiced by William Salyers)
 * Pops (Voiced by Sam Marin)
 * Skips (Voiced by Mark Hamill)
 * Benson (Voiced by Sam Marin)
 * Muscle Man (Voiced by Sam Marin)
 * High-Five Ghost (Voiced by Sam Marin)

Secondary Characters

 * Margaret (Voiced by Janie Haddad)
 * Eileen (Voiced by Minty Lewis)
 * Captain Janine of the Police Department (Voiced by Jennifer Hale) appearance-brunette ponytail

Villains

 * ??? (Voiced by ???) - the main antagonist and the cause of all the villains Mordecai and Rigby have been attacked by, which was found out in the Season 3 finale!
 * Lechorians:
 * Robot Mordecai (Voiced by J.G. Quintel)
 * Robot Rigby (Voiced by William Salyers)