Sunny Park Colosseum (Japanese: サニーパークコロシアムSunny Park Colosseum) is a Colosseum in Pokémon Battle Revolution. This Colosseum is led by Sashay.
The Colosseum is set in a large grassy patch at the Pokétopia Sunny Park. Surrounding the Colosseum are a fountain with a Dive Ball on top, several skyscrapers that appear to be identical to the ones from the city skyline, viewed from Gateway Colosseum, and a gondola line. People are able to watch battles from both sidelines and various tree houses nearby.
At the start, the Colosseum hosts a typical Knockout Battle with seven Trainers. After Pokétopia Championship is cleared, the Colosseum features the Little Battle, an variation of Stadium 2's Little Cup.
The Level rule is unique, allowing Pokémon Level 5 or under to participate in the battle. They may also be in their first forms (including Baby Pokémon forms).
Besides Sashay, who is a locally famous dancer, her fan club members often face players in battles at this Colosseum.