Toxapex can possess one of two Abilities; Merciless, which makes all attacks critical hits when the target is Poisoned, or Limber, which prevents it from being afflicted by Paralysis. Its Hidden Ability is Regenerator, which restores one third of its maximum HP when switched out of battle.
Mareanie evolves into Toxapex starting from Level 38.
Toxapex is in the Water 1 Egg Group. It takes Toxapex 1,000,000 Experience Points to reach Level 100.
Toxapex is yet to appear in a spin-off game.
Trading Card Game
Toxapex is yet to appear in the Trading Card Game.
Toxapex is yet to appear in the anime.
Toxapex is yet to appear in the movies.
Toxapex is yet to appear in the manga.
Toxapex is a part of the Overused (OU) tier of competitive battling. With amazing natural bulk, the ability to regain HP through Recover and its ability Regenerator, and a solid defensive typing, Toxapex is among the best defensive Pokémon in the tier. Its access to Haze is incredibly important, as it can shut down potential set up sweepers, making it a wonderful fit for stall and balance teams. It can wall some of the tier's most potent offensive powerhouses like Mega Scizor, Volcarona, Keldeo, and Greninja lacking Extrasensory. With Toxic Spikes, Toxapex can passively wear down the opposing team while serving as a good utility Pokémon. Toxapex's offensive prowess is much to be desired, though, and it heavily relies on Scald burns and poison damage to be able to break through a number of threats.
Toxapex is also viable in the Uber tier of competitive battling. The gist of its viability in the tier is mostly based on having Haze, which allows for it to answer the likes of set up sweepers like various Calm Mind Arceus forms, Geomancy Xerneas, and Z-Heal Block Palkia. It is among the best answers to Z-Geomancy Xerneas, which is a feat that not many Pokémon can put to claim. With Recover and Regenerator, it can stay healthy throughout the match and serve as a soft check to Mega Lucario. Toxapex has incredibly bad offensive prowess, though, having to rely on poison and burn to wear down at opposing foes. This makes it very susceptible to Taunt users, especially Mega Gengar, which can trap and dispose of it. While its typing offers some incredibly helpful resistances, it also is weak to Ground attacks, so most physical attackers can have a field day with it, especially some Swords Dance Arceus forms and Primal Groudon. A Psychic weakness also limits the number of special attackers it can switch into, and it relies on a Wacan Berry to avoid being 2HKOed by +2 Xerneas's Thunder. It also has a low HP stat that works against it, as powerful special attackers can overwhelm it. With these flaws, it needs a decent amount of team support and can only fit on stall teams.