>>30435293>WishiwashiSlow as molasses and shit HP, but probably the best choice in-game.
>ToxapexPain in the ass to catch. Pretty good if you manage to get one, but requires poison infliction in order to deal decent damage. Super tanky.
>AraquanidEasy to use right off the bat. Can support with screens, heal with Leech Life, trap with Infestation, and burn opponents with Scald, but doesn't truly shine until you get to the move relearner and teach it Liquidation, which is practically endgame.
Personally, I like Araquanid, but Wishiwashi is by far the most OP and easy to use.