There are two unused narrations for Lagoon Colosseum; "ba120_0" and "la030_0" respectively. If ba120_0 is played, the announcer says "Lagoon Colosseum, Tournament Battle. First match". If la030_0 is played, the announcer says "Surrounded by cascading water, the battle is about to begin." These may imply that Lagoon Colosseum was once intended to have been its own tournament in single player battles rather than a multiplayer exclusive colosseum.

Arceus is pronounced as "Ar-see-uss" by the announcer during a battle. The official pronunciation of Arceus is "Ar-key-us", which was finalized 5 years after the North American release of Battle Revolution.