Having unbelievable spiritual pressure, despite being knocked by Ichigo at times, Isshin is tremendously powerful. Isshin's zanpakutō is called , The release command is , whereupon the blade becomes wreathed in a flame emanating from the tassels. Spitting blood onto the blade creates a huge wave of fire. His Bankai is yet to be shown in the current storyline, but is noted by Aizen to put a considerable strain on his body, thus being unusable if Isshin is heavily injured. He is voiced by Toshiyuki Morikawa in the Japanese version and by Patrick Seitz in the English dub.