|Height||186 cm (6'1")|
|Weight||80 kg (176 lbs.)|
|Affiliation||Kurosaki Clinic, Karakura Town|
|Previous Affiliation||Soul Society|
|Base of Operations||Kurosaki Clinic, Karakura Town, Japan, Human World|
|Relatives||Masaki Kurosaki (Wife, deceased)|
Ichigo Kurosaki (Son)
Yuzu Kurosaki (Daughter)
Karin Kurosaki (Daughter)
Hana Kurosaki (Grand-daughter)
Mizu Kurosaki (Grand-daughter)
Tea Kurosaki (Grand-daughter)
Isshin Kurosaki is the father of Ichigo, Karin, and Yuzu. He is a skilled doctor, capable of preforming almost any medical procedure with the exception of major surgery. He is also a Shinigami, which is revealed in the original Bleach series. He is also the grandfather of Hana, Mizu, and Tea with Mizu being his favorite.
Isshin is a somewhat gruff-looking, tall, and muscular man with spiky black hair and brown eyes. He has thin facial hair around his mouth and on his cheeks. As a doctor, Isshin is usually seen wearing a white lab coat over his otherwise more casual shirt and trousers. He has the appearance of a man in forties, as noted by his daughter, Karin and his daughter-in-law, Seiya Kurosaki.
As a Shinigami, he wears the standard Shinigami shihakusho, along with a tattered Captain's haori, worn like a sash and fastened over his left shoulder. The Division insignia cannot be seen as the haori is worn presently.
While Isshin can be grim and serious at times, he typically acts in a goofy, energetic and fun-loving manner. He cares greatly for his children and takes a keen interest in what his daughters are doing, but less so with Ichigo, feeling that he does not need to be watched over as he views boys as different. He is willing to make a fool of himself in order to cheer up the kids and spends a great deal of time with the twins. Isshin is a big fan of Don Kanonji's TV show. As a Shinigami, Isshin is much more serious, but is still prone to arguing.
Since getting grand-children, he has noted several times that he is glad that they were girls instead of boys and he tends to comment on how "beautiful" they've become since the last time he saw them. His favorite of his grand-children appears to be Mizu, as he consistently commenting on how much she looks like his deceased wife, Masaki, despite Ichigo's claims otherwise.