Yuriko Oyama is the daughter of Kenji Oyama, a former Japanese kamikaze pilot during World War II whose face was horribly scarred in a failed suicide attack on an American battleship. Later becoming the head of Oyama Heavy Industries, Kenji had Yuriko and her two brothers privately tutored by Marcy Stryker, wife of an American soldier named William Stryker. Kenji felt much shamed by his failure decades earlier, and as a result he ultimately scarred the faces of his three children in a ritual design. Becoming the criminal scientist Lord Dark Wind, Kenji developed a means for bonding the virtually indestructible metal Adamantium to human bone, a procedure he hoped to use in creating an army of super-soldiers for Japan. However, his notes were stolen, and it took him years to rediscover the process.
Yuriko's father, Lord Dark Wind, invented Experiment X—the process of bonding adamantium to bone—which is what help to created Wolverine.
Fueled by revenge of the events surrounding the deaths of her family, she becomes Lady Deathstrike through extensive cybernetic enhancements. Her skeleton is infused with molecules of adamantium, thus transforming into a cyborg and rendering her physically unbreakable. She is distinguished by her ten 12-inch long adamantium claws which replace her fingers and give her the ability to slice through almost anything.
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