• 
  Laura Dern

  (voice)
• 
  Bill Burr

  (voice)
• 
  Haley Reinhart

   (2015) (voice)
• 
  Justin Long

  Kevin Murphy / Phineas / Chuck Sawitzki
• 
  Sam Rockwell

  Vic / Vic Reynolds
• 
  Vince Vaughn

  Chet Stevenson
• 
  Snoop Dogg

  Sugar Squires
• 
  Debi Derryberry

   Maureen (1 episode, 2015)

• 
  Gary Cole

  (3 episodes, 2015)
• 
  Mo Collins

  (6 episodes, 2015)
• 
  Trevor Devall

  (6 episodes, 2015)
• 
  Kevin P. Farley

  (3 episodes, 2015)
• 
  David Koechner

  (4 episodes, 2015)
• 
  Kevin Michael Richardson

   Rosie / ... (5 episodes, 2015)
• 
  Phil Hendrie

  (6 episodes, 2015)

• 
  T.J. Miller

   Randy (3 episodes, 2017)
• 
  Josh Adam Meyers

   DJ Howlin Hank (3 episodes, 2017)
• 
  Jamie Denbo

  Marie Bonfiglio
• 
  Joe Buck

  Mr. Fitzsimmons
• 
  Al Ducharme

  Anthony Bonfiglio
• 
  Eileen Fogarty

  Nguyen Nguyen
• 
  Keith Ferguson

  Additional Voices
• 
  Michael Kenneth Williams

  Smoky