Blastoise

With a kit tailor-made for enabling partners, Blastoise stands out as DOU's definitive pure support pick. Access to all of Fake Out, Follow Me, and a pivot move in Flip Turn makes Blastoise incredibly effective at controlling the board and generating space for teammates to operate. Its respectable defenses leave it quite adept at soaking up attacks for its team; its pure-Water typing can be a mixed bag, though, only truly vulnerable to Grass-types such as Rillaboom but giving little in meaningful resistances. Blastoise generally fits best in fast, aggressive teams that feature threatening setup sweepers such as Dragon Dance Dragapult, Nasty Plot Spectrier, and Quiver Dance Volcarona. While Blastoise does compete with Amoonguss as a redirector and Tapu Fini as a bulky Water-type, it can be a better fit for borderline hyper offensive compositions that prefer its dynamic, positioning-oriented arsenal over slow, controlling utility of Amoonguss's Spore and Tapu Fini's terrain control. Most glaringly, though, Blastoise's focus on sponging hits can let strong attackers like Urshifu-R and Zygarde simply overwhelm it or ignore the redirection; its lack of any offensive presence whatsoever means its partners must be threatening enough to make the support count.