Tapu Koko

Undoubtedly the most punk rock of all Pokemon, Tapu Koko's loud and intense effects on the Doubles OU metagame cannot be ignored: its high Speed stat, Electric typing, and immense power through Electric Surge make it one of the most potent offensive threats around, dropping wicked Thunderbolts onto anything that doesn't resist them. On top of its power boost, Electric Terrain also has great utility, providing a blanket sleep immunity for everything grounded. Tapu Koko's Electric typing additionally makes it one of the premier offensive answers to common Pokemon in the metagame, such as Mega Salamence and Tapu Fini. Conversely, Tapu Koko's unique movepool allows it to fulfill a more supportive role on certain teams, aiding its teammates with attacks like Electroweb and Defog. Unfortunately, Tapu Koko is heavily reliant on Electric Terrain and its item for damage output, as a base 95 Special Attack is pitifully low for an offensive Pokemon. Additionally, its most reliable Fairy-type STAB attack is Dazzling Gleam, which is even weaker when factoring in spread-reduced damage. Tapu Koko's offensive set is also incredibly frail, often taking half HP or even more from resisted moves and simply fainting to strong neutral hits. Nonetheless, Tapu Koko is a great addition to offensively oriented teams that need a fast attacker.