Marill

Even after Marill swims in a cold sea, its water- repellent fur dries almost as soon as Marill leaves the water. That's why this Pokémon is never cold.

Aqua Liner: This attack does 20 damage to 1 of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Let's All Rollout (20×): This attack does 20 damage for each of your Benched Pokémon that has the Let's All Rollout attack.