| Arena Trap
Arena Trap (Japanese: ありじごく Antlion) is an Ability introduced in Generation III. Three Pokémon can have this Ability, all of which are Ground types.
Arena Trap prevents all foes from fleeing (including Teleport) or switching out as long as the user remains in battle.
Pokémon rendered immune to Ground-type attacks are immune to Arena Trap. This includes Flying-type Pokémon, Pokémon with Levitate, Pokémon holding an Air Balloon, and Pokémon affected by Magnet Rise or Telekinesis. Likewise, if a Pokémon normally immune to Ground-type attacks is made vulnerable, they will be affected; if the Pokémon is under the effect of Gravity, Smack Down, a move that negates or replaces Levitate (such as Gastro Acid or Simple Beam), type change effects that remove Flying-type (such as Soak, Conversion, Camouflage, or Color Change), or a held Iron Ball, it will be unable to escape.
Using Baton Pass, U-turn, Volt Switch, or Parting Shot will still cause the Pokémon to switch out. Holding a Shed Shell allows the Pokémon to switch out, but not flee or Teleport. Having the Ability Run Away or holding a Smoke Ball allows the Pokémon to flee or Teleport, but not switch.
If a wild Pokémon has Arena Trap and the player's Pokémon faints, if the player attempts to flee instead of sending out another Pokémon, they are unaffected by Arena Trap.
Arena Trap does not affect allies.
Ghost-type Pokémon are now immune to Arena Trap.
Outside of battle
From Pokémon Emerald onwards, if a Pokémon with Arena Trap is leading the party, then the wild Pokémon encounter rate is increased to 200%. It shares this trait with Illuminate.
Pokémon with Arena Trap
In the anime
In other languages