Tentacool is listed as a Water/Poison type in the current Pokémon Champions format, with usage data pulled from competitive teams, tournament results and Showdown-ready pastes tracked by MetaVGC. This page brings together its most common moveset, nature, ability, item, teammates and type weaknesses so you can judge where Tentacool fits in a VGC team.
The most common build highlights Clear Body, Eviolite and Bold 252/0/248/0/0/4. Its frequent moves include Acupressure, Muddy Water, Aqua Ring, Protect, Acid Spray, and Icy Wind. Treat those choices as a data-backed starting point: they show what players are bringing, while EV spreads, Tera Type and the final move slot should still respond to your expected matchups.
Defensively, Tentacool has important weaknesses to electric 2x, ground 2x, psychic 2x. That matters during teambuilding because a strong composition needs ways to cover those attacks without giving up offensive pressure. Partners such as Incineroar, Smeargle, Ho-Oh, Kommo-o, and Eternatus appear often because they can add positioning, type coverage, speed control or safer switches into common checks.
MetaVGC tracks recent teams using Tentacool. Open the Tentacool teams page to compare complete structures, copy Showdown pastes and see how players combine Tentacool with other Pokémon in the active format.