Beedrill

Previously ridiculed as a garbage Pokemon, Beedrill's Mega Evolution turns it into a beast! While still relatively uncommon in Battle Spot, Mega Beedrill is an offensive powerhouse. Its strength lies in its obscene Attack and Speed, which allow it to outspeed many common threats, and Adaptability, which doubles the power of its STAB moves. It also has a very strong U-turn, turning it into a powerful scout. Unfortunately, it can't reliably switch into a lot of threats because of its low bulk and bad defensive typing. Entry hazards, particularly Stealth Rock, give it a huge problem, as they limit the number of times it can switch in. The big problem is that Mega Beedrill can't stand up to a lot of its defensive checks without a lot of team support, so keep that in mind when building around it.