Cast
- Gumball as Marlin
- Darwin as Nemo
- Penny as Dory
- Principal Brown as Gill
- Richard as Bloat
- Carrie as Peach
- Fergy Fudgehog (from Viva Pinata) as Gurgle
- Banana Joe as Bubbles
- Anais as Flo
- Marvin as Jacques
- Homestar Runner (from Homestar Runner) as Nigel
- Cuphead (from Cuphead) as Crush
- Mugman (from Cuphead) as Squirt
- Roly, Tag, Happy, Norrie and Betty (from Hey Duggee) as Sheldon, Tad and Pearl
- Duggee (from Hey Duggee) as Mr. Ray
- Doc Hopper (from The Muppet Movie) as Bruce
- The Yogman Twins (from Whatever Happened to Robot Jones?) as Anchor and Chum
- Robot Jones (from Whatever Happened to Robot Jones?) as Blenny the Worried Fish
- Principal Madman (from Whatever Happened to Robot Jones?) as Dr. Phillip Sherman
- Tina Rex as Darla Sherman
- Molly Coddle (from Bump in the Night) as Coral
- Eddy's Brother (from Ed, Edd n Eddy's Big Picture Show) as Barracuda
- Frogfish (from The SpongeBob SquarePants Movie) as Anglerfish
- The Pig Natives (from Muppet Treasure Island) as The Seagulls
- Arts and Crafters (from Baldi's Basics in Education and Learning) as The Whale
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