Latios

Latios is one of the strongest sweepers in the entire Ubers tier. His signature item, Soul Dew, boosts his already great Special Attack to stupendous amounts, allowing him to OHKO or 2HKO near anything with the correct move. Soul Dew also grants him a special defense boost, meaning that he can easily switch in to non-super effective special hits (as well as the ubiquitous Earthquake courtesy of Levitate) to easily set up or just KO something with his astonishingly powerful Draco Meteor attack. Latios also outspeeds a huge portion of the Uber metagame, which just makes him even more of a threat.

Despite his great power, Latios is not perfect. His typing afflicts him with weaknesses to common Uber attacking types such as Ghost-, Dark-, Dragon-, and Ice-type attacks. That Dark-type weakness makes him vulnerable to Pursuit, meaning that he is easily removed by trappers such as Scizor and Tyranitar. He also won't be getting past Blissey anytime soon either. Furthermore, he has to compete with Latias often for a team slot, as his sister is usually easier to fit in a team thanks to her superior bulk. Despite these flaws, Latios is still a great Pokemon to consider using in any Ubers team.