Smeargle

Smeargle fills a unique niche in the UU metagame as an entry hazard lead with access to sleep-inducing moves. It gets access to almost every move in the game, but subpar offensive stats relegate it to using passive moves. This isn't necessarily bad, however, as Smeargle makes for a great support Pokemon that can beat most other leads if you play it right. Smeargle faces some competition as a Sticky Web user from Shuckle, which has more bulk and has room to use a Mental Herb to dodge Taunt for one turn. However, Smeargle's higher Speed and access to Spore, Taunt, and Magic Coat are enough to differentiate itself from its competition and carve a decent niche for itself. Still, though its base 75 Speed isn't bad by any means, it causes Smeargle to get outsped by common offensive Pokemon such as Hydreigon, Infernape, and Mega Aerodactyl, which can limit Smeargle to setting up only one entry hazard because of its terrible defenses. Additionally, Smeargle is vulnerable to Taunt due to its passive nature, though Magic Coat mitigates this somewhat.