I.S.F.R.

"The Intersociety Special Forces Regiment. The most feared fighters of existence who don't use otherworldly powers. Their reputation is legendary, and they don't just let anyone in their ranks. In times of desperation, they'll be the ones we rely on in order to keep the peace. You're my best man, Ginji - don't let 'em down."

- Jūshin Igen to Ginji

The I.S.F.R., or the International Special Forces Regiment (国際特殊部隊は連隊, Kokusai Tokushu Butai wa Rentai) is a special operations force composed of the best from Soul Society's armed forces. The members' origin vary, as they come from the Gotei 13, the military residing in Yurei Oukoku, Aether, and many other places. The commanders of the I.S.F.R. all come from the Yūrei military, who are the founders of the program.