- Mary Wendle
- Charles "Chad" Caswell III
- Melanie Baker
- Jim Reese
- Joshua Maverick
- Regis Gilben
- EJ and Sue Randell
- Chelsea Keezheekoni
- Belson Noles
- Brenda Shoop
Appearances in other media
- Clarence, Jeff, Sumo, and Belson, made guest appearances in the Uncle Grandpa short, Pizza Eve, along with other characters from current and ended Cartoon Network originals.
- Jeff made a cameo in the OK K.O.! Let's Be Heroes episode, Crossover Nexus, where he appears as both stone and one of Ben Tennyson's transformations to defeat Strike, the episode's main antagonist
- Mystery Piñata (February 10th, 2015)
- Dust Bunnies (September 15th, 2015)
Clarence was a playable character in the 2016 console game, Cartoon Network: Battle Crashers, released for PS4, Xbox One, and Nintendo 3DS, later ported to Nintendo Switch in 2017.
Clarance appears as a boardwalk customer in the mobile Cartoon Network: Match Land.
Clarence's haircut and shirt were featured as clothing in the 2019 mobile game, Kleptocats: Cartoon Network.