The Battle Colosseum is the main setting of Mighty No. 9. It appears to be located somewhere in California in the United States.
The Battle Colosseum is a free-for-all robot combat arena. The spectacle is sponsored by the government as a way to further advancements in robotics.
Victors of these battles gain access to a massive coffer of research funds, and a mess of special privileges to boot! The event also garners plenty of support from the masses, acting as a modern bread and circus (or a place to make a quick buck).
There are all sorts of robot fights outside of this event: high-speed races, endurance contests of pressure or cold. But none are as popular as the high-octane combat of the Battle Colosseum! Beck and the other Mighty Numbers are a popular team on this fighting circuit.
- The game's final stage takes place in the Battle Colosseum, where Beck goes to confront Trinity after learning that she is responsible for the robot uprising.