Kisuke Urahara/Expanded Universe

is the former captain of the 12th Division, as well as the founder and 1st President of the S.R.D.I.. His lieutenant was Hiyori Sarugaki. He lives in the Human World where he owns a small convenience store which sells Shinigami items. He is assisted by his employees Tessai Tsukabishi, Jinta Hanakari, and Ururu Tsumugiya.

Bleach: Can't Fear Your Own World
Shortly after defeating Askin Nakk Le Vaar, Urahara, Grimmjow Jaegerjaquez, Yoruichi Shihōin, and Yūshirō Shihōin are rescued from the Sternritter's Gift Ball Deluxe by Nelliel Tu Odelschwanck. After recovering, Urahara proceeds to construct new bindings to imprison Sōsuke Aizen in Muken.

Powers & Abilities
Kidō Master: Urahara's skill in Kidō allows him to cast a level 99 Hadō spell without incantation; shortly after already casting a level 91 Hadō.