Venusaur

Venusaur is rather one-dimensional in the UnderUsed metagame, as it is outclassed by Roserade, Chesnaught, and Celebi it most of its potential roles; however, it is an extremely potent sun sweeper thanks to Chlorophyll, which doubles its Speed while the sun is up. While Chlorophyll is activated, Venusaur can outspeed Mega Aerodactyl and slower Choice Scarf users while having a Modest nature, which lets it hit much harder with Life Orb and Growth. Venusaur also has a pretty good offensive typing and an even better defensive typing in Grass / Poison, which allows it to set up on Pokemon such as Sylveon and Whimsicott while resisting most forms of priority, such as Crawdaunt's and Feraligatr's Aqua Jet and Mach Punch and Vacuum Wave from Fighting-types.