Shukuro Tsukishima, and his motives are to steal Kurosaki's Fullbring, but later on, he decides to keep Kurosaki away from him.
Ginjo is also a villain who stole Ichigo's fullbring
In the latest chapters, Ginjo is the primary antagonist. an Ex Shinigami representative, his goal was to use Ichigo's fullbring to power up both himself and his comrades in order to get revenge on the spirit world, primarily the king of the spirit world. Tsukishima is a secondary villain working subordinate to Ginjo.