Characteristics

Height--5'9"

Weight--130 lbs (59 kg)

Eyes--Brown

Hair--Black

Unusual Features--Dragon tattoo across back

Abilities

Yukio is not a mutant and possesses no super powers.

Special Skills--hand-to-hand combatant with considerable expertise in Japanese martial arts, an expert with hurling bladed weapons, and an athlete with great agility.

Weaponry--Throwing knives and scalpel-like shuriken.

Yukio is a Ronin (masterless Samurai). Occasionally a thief by profession, she has been portrayed as a free spirit with an almost careless disregard for personal danger.

History

The X-Men's first encounter with Yukio occurred when Wolverine had his struggle with Shingen Harada, father of Wolverine's girlfriend Mariko Yashida. At that time Yukio worked for Shingen, and one of her tasks was to kill Wolverine. Instead she developed a crush on him and subsequently aided him in bringing about Shingen's downfall.

Yukio later joined Storm in an altercation with Viper and Silver Samurai. During the battle Storm blasted the Silver Samurai with her lightning, finding to her horror that her powers were out of control. She drew the lightning back into herself, nearly being electrocuted in the process. Yukio knocked Storm out of the path of her lightning bolts and dove with her into the nearby bay, enabling them to escape from the Silver Samurai.

After the death of Mariko Yashida, Wolverine sent his adopted daughter, Amiko Kobayashi, to a foster family. He later discovered that her new foster parents were abusive and only interested in the money. Wolverine took Amiko away from them and asked Yukio to raise her.

When Sabretooth targeted Wolverine's friends and family, he hired Omega Red and Lady Deathstrike to kidnap Amiko. Yukio fought the two, but was overpowered and seriously injured. Wolverine then rescued Amiko but it is unclear whether he returned her to Yukio's care.

Yukio reappeared in the pages of X-treme X-Men and seemed fully recovered.