Isshin Kurosaki biological father of Ichigo

Isshin Kurosaki (黒崎 一心, Kurosaki Isshin) is the biological father of Ichigo, Karin and Yuzu and as such, head of the Kurosaki family.(wikia)

Isshin Kurosaki biological father of Ichigo

Isshin Kurosaki from Bleach Anime

Isshin Kurosaki from Bleach Manga