Mt. Battle is a massive battle facility located near Agate Village. It consists of 100 trainers spread across 10 zones, with each zone having a specific type theme. Completing all 100 battles in a single run (without losing) is a significant challenge, but offers excellent rewards.

Rewards:
- Experience and Money: Each battle provides substantial experience points and money, making it an ideal training ground.
- TMs: You'll receive various TMs as rewards for completing certain zones.
- Ho-Oh: After purifying all 48 Shadow Pokémon and defeating all 100 trainers in Mt. Battle, you will be able to receive a special Ho-Oh from the Battle Judge. This is a post-game reward and requires significant dedication.
Strategy: Prepare a balanced team with good type coverage. Healing items are crucial, as you cannot access a Pokémon Center during a run. Consider bringing Pokémon with recovery moves or abilities. Save your game before starting a run, as losing means starting over from Zone 1.