Originally Posted by Fat FaceFaceFace
Hydreigon's too slow for a dragon. You'd be better off with something like LO Latias as a wallbreaker. I tried them both, and Latias was better by a mile.
Hydreigon has the capability to go mixed and doesn't care about Tyranitar, who scares the Lati twins shitless.. Plus Hydreigon's low-speed can actually be a point in its favor, since that means it can afford to run a Modest nature, giving its attacks a lot of extra kick.