Kabutops

Kabutops gets a huge boost in the Ubers environment because of Kyogre. The infinite rain created by Drizzle instantly transforms this sub-par Pokemon into an offensive force, as once its mediocre Speed stat is cured (it's actually quite impressive with a Swift Swim boost), its great Attack stat can shine as well. Kabutops is one of those Pokemon whom you probably laugh at the first time you see, but then watch in utter horror as it easily bulldozes through your team once it has set up.