- Banana Joe
- Hot Dog Guy
- "The Club": Gumball looks for the football club.
- "The Meddler": Nicole can be seen bathing Gumball against his will.
- "The Skull": Gumball, Darwin, and Clayton try to avoid taking a shower, and end up destroying it in the process.
- "The Sidekick": It is one of the many places where Tobias apologizes for not returning Gumball and Darwin's game.
- "The Photo": Gumball trains his face for his school photo.
- "The Voice": Gumball and Darwin falsely apologize to Tobias. It later reappears when they fight William.
- "The Move": Clayton is seen taking a shower here.
- "The Bros": The cheerleading squad is seen here.
- "The Society": Tobias checks his weight on the scale here.
- "The Triangle": The school marching band is seen inside here.
- "The Pest": It is one of the places where Gumball and Darwin advise Anais.
- "The Hug": Hot Dog Guy showers here.
- "The Guy": Gumball takes pictures of Josh showering.
- "The Vision": Gumball and Darwin find Alan's gym bag here.
- "The Worst": Gumball and Darwin get harassed in here.
- "The One": Tobias insults Gumball here.
- "The Cringe": Gumball, Hot Dog Guy, and Banana Joe have a cringeworthy experience here.
- "The Agent": Gumball and Darwin are flooded into here by Coach jumping into the pool, where they find that their clothes are missing.
- The school showering stalls have been destroyed twice in the series so far. The first time was in "The Skull," and the second time was in "The Voice."
Community content is available under CC-BY-SA unless otherwise noted.