Pokémon Diamond Version, Pearl Version, and Platinum Version - Double Battle
A Double Battle is a battle with two Pokémon in battle on each side. When a Double Battle starts, the first Pokémon on each side takes the left position, and the second Pokémon on each side takes the right position. If there are two Trainers on a single side, instead the first Pokémon on the left Trainer’s party takes the left position of that side, and the first Pokémon on the right Trainer’s party takes the right position of that side.
In Double Battles with wild Pokémon, Roar, Teleport, and Whirlwind will always fail. However, the player can still end such battles using a Pok Doll, Fluffy Tail, or the Run command. If the player has a partner Trainer when a Double Battle with wild Pokémon starts, each Pokémon in the player’s party and the partner Trainer’s party will have full HP and PP and stop being poisoned, burned, paralyzed, frozen, and asleep when the battle ends.