Shingen Yashida the father of Mariko and a Yakuza crime boss in Japan. Shingen Yashida was killed by Wolverine.

Yukio is a regular human possessing no mutant abilities. She is a skilled ninja and aids Wolverine in his battles.

Ken'ichiro Harada is the half brother of Mariko Yashida. A mutant he possesses the ability to slice threw anything a power he channels through a sword. Kenuichio was slain and his son Shingen Harada became the new Silver Samurai.