Taillow

With its impressive Speed (hitting the second-highest Speed tier in all of Little Cup), usable Attack stat, and the ability Guts, Taillow can be a very fearsome threat after just a single turn. These attributes, in conjunction with powerful STAB moves in Brave Bird and Facade, make Taillow perfectly capable of netting KOs on some of the tier's bulkiest Pokemon. However, Taillow has an unfortunate Stealth Rock weakness, vulnerability to priority, and a tendency to kill itself with residual damage. Yet, with proper support from its team, Taillow can easily do great deals of damage to an unprepared team.