Cottonee

If there's any Pokemon in Little Cup that can make you want to tear your hair out, it's Cottonee. With Prankster and a massive support movepool, Cottonee has everything it needs to annoy its opponents the entire match. It has enough usable moves to play completely different every time you face it, and there's no way to tell what it's running until half of your team has been hit with Leech Seed, paralyzed, or poisoned.

However, that's where Cottonee's positives end. Its defenses are good but not great for a defensive Pokemon, and with no recovery outside of Leech Seed, it gets worn down easily. It also has no offensive potential whatsoever, sporting awful base attacking stats of 27 and 37 and a shallow offensive movepool to match. Because of this, Cottonee's only sources of damage are entry hazards, Leech Seed, and Toxic. Grass-types are a hard stop to Cottonee as they are all immune to Leech Seed and most (namely, Foongus and Ferroseed) are immune to Toxic. Also, Cottonee has a rather steep learning curve, and it takes some practice to get any use out of it, which can discourage some players from even trying it. Even with all these flaws, you can't help but let out a groan every time this cotton ball shows up in Team Preview.