Mansaku is unable to communicate above an animalistic level, and maybe some basic words. He is cared for by his sons, Okuyasu and Keicho Nijimura. Despite no longer recognizing his sons, he still has memories of them, and loves them. Due to his financial issues and the loss of his wife, he made a deal with DIO in the past, and was deformed beyond recognition by a flesh bud after DIO's death. His body is abnormally flimsy, his limbs come off easily, but he heals rapidly and regrows limbs he lost.