Tentacruel is the final evolved form of Tentacool. The tentacles on this Pokémon are normally kept short, but on hunts they are extended to ensnare and immobilize prey. In “Tentacool and Tentacruel,” Team Rocket come up with a mischievous plan to drive away the Tentacool on the Hutber Port coral reef by spreading a mixture of soy and vinegar over the ocean area. Their plan backfires however , as the Tentacool evolve into gigantic and powerful Tentacruel, which attack the humans in retaliation.
First appearance: Episode 19 — “Tentacool and Tentacruel”