Combusken

Thanks to a good offensive typing and an amazing ability in Speed Boost, Combusken is an excellent wallbreaker and sweeper in ZU. It is easily capable of snowballing, with it only taking two turns to outspeed the entire unboosted metagame and three to outspeed every Choice Scarf user as well. With good mixed attacking stats, Combusken can go special or physical, making it at least somewhat unpredictable. Thanks to its typing, Combusken is capable of beating traditional Fighting-type checks like Gourgeist-XL and Mr. Mime as well as Fire-type checks like Golem and Silvally-Water. However, Combusken is very frail, leaving it easily revenge killed by priority, especially by Aqua Jet from Swanna and Floatzel. In addition, its low base 55 Speed means that is it is very reliant on Protect and Speed Boost to outspeed a lot of Pokemon, for example leaving it outsped by Floatzel at +1 and Choice Scarf Electivire and Swanna at +2. Protect leaves it quite strapped for moveslots, which is an issue compounded by its poor movepool leaving it without a good physical Fighting-type move and reliant on Hidden Power and Z-Moves. Because of this, it very rarely has room to run Eviolite, exacerbating its already poor bulk.