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- Mr. Gar
- Dynamite Watkins
- Mega Football Baby
- Fish Dude
- A Real Magic Skeleton
- Diving Belle
- Dolph Finn
- Red Action
- Crinkly Wrinkly
- Nick Army
- Ted Viking and Foxy
- Bell Beefer
- Bill Burp
- Puck Reverie
- Glitter Starlight
- Ms. Mummy
- Joe Cuppa
- Cookie Man
- Mr. Logic
- Courtenay Taylor as K.O.
- Ashly Burch as Enid
- Ian Jones-Quartey as Radicles / Darrell
- Dave Herman as Mr. Gar / Brandon
- Kate Flannery as Carol
- Mary Elizabeth McGlynn as Snake / Dynamite Watkins
- Melissa Villasenor as Drupe / Potato / Mega Football Baby
- Ben Jones as A Real Magic Skeleton
- Cole Sanchez as Colewort
- Kari Wahlgren as Shannon
- Robbie Daymond as Raymond / Co-Bruh / Singer
- The name "Plazalympics" is a direct parody of "Olympics," which is an annual international sports festival.
- A trailer for this episode was released after the episode "Glory Days" aired.
- This episode was originally intended to air around episodes 18-20.
- Vormulax is revealed to be female in this episode.
- This episode is a reference to the Laff-A-Lympics intro.
- Raymond's entrance pose while coming out of his flower, is a reference to Capitoline Venus' trademark pose.
- The song at the end is a parody of "Love the One You're With" by "Crosby, Stills, and Nash".
- In one scene while Mr. Gar is giving a speech, Joe Cuppa's head is discolored as brown.
- In Raymond's close up scene, right before he starts his part of the race, his tank top is absent.
- In the end credits, Kate Flannery wasn't credited for voicing Carol, instead they credited Melissa Villasenor as the voice of Carol.