Rukia Kuchiki
Rudbornn carries out his duties for Szayelaporro by killing off two of the Privaron Espadas after they lose their respective fights and was forced to withdraw from killing the third when Retsu Unohana appears. Later, he and his Calaveras attempt to prevent Ichigo Kurosaki from reaching Orihime Inoue and Ulquiorra Schiffer, only to find himself fighting Rukia Kuchiki. Despite overwhelming her with his Calaveras, Rudbornn is subsequently defeated when the distraction by Yasutora Sado and Renji Abarai allowed Rukia to use her "shikai" to encase him in ice before being punched by an enraged Yammy. The light novels reveal Rudbornn survived Yammy's punch as he later sees his dreams of Hueco Mundo realized through Tier.