After defeating the Elite Four, the Battle Frontier becomes accessible via the Fight Area. This post-game area offers several challenging battle facilities, each with its own rules and Frontier Brains to defeat. Earning Battle Points (BP) allows you to purchase rare items and TMs.

- Battle Tower: Standard battles, 7 consecutive wins for a streak.
- Battle Factory: Rent Pokémon and battle with them.
- Battle Arcade: Spin a roulette wheel to determine battle conditions.
- Battle Castle: Manage Castle Points (CP) to buy items and heal Pokémon.
- Battle Hall: Choose a single Pokémon and battle against specific types.
The Battle Frontier is the ultimate test of your battling prowess and team-building skills. Defeating the Frontier Brains earns you commemorative prints for your Trainer Card.