Wanigawa Raifu

Raifu (雷斧) is a character introduced in Toaru Kagaku no Railgun. Initially appearing as a competitor in the jailbreak trial, she is later revealed to be part of a group who used the event to engineer a real jailbreak.

Appearance
Raifu is a little girl with light hair. She wears a top with baggy sleeves.

Personality
She presents a facade of helplessness and cowardice, influencing people to come to her aid. However, as Yamashiro Shoubu has noted using his power, she reeks of malice, which is proven later by her vicious beating of him.

Jailbreaker Arc
Raifu was a participant from the very beginning of the competition, and likely took advantage of Misaka Mikoto and the others creating an opening in the outer wall of the facility. Inside the girl's building, she met Yamashiro Shoubu, who wears a tanuki mask which she constantly mistook for a bear, while fleeing from guard robots. Raifu took advantage of him, allowing him to bear the brunt of the facility's security system.

She was later separated from him and chased by centipede robots, coming across Mikoto's group as they are surrounded by more robots. However, she snuck past them and went off without any of them noticing where she went. Her whereabouts were unknown for the remainder of the trial, which ended with Uiharu Kazari successfully hacking the facility and breaking out the target prisoner, who had actually been switched with her imprisoned comrade Kimi.

During festivities afterwards, she encountered Yamashiro Shoubu again and was asked to follow him into a secluded area. There the 'masked hero' threatened her with his wooden sword, sensing how she reeks of malice. Not long afterwards, she beat him up, showing her true colors. She later met up with Aohoshi, Tsurigane and Kimi in an abandoned building, happy that the latter was finally free.

Abilities
Raifu's abilities are currently unknown but she was able to defeat Yamashiro Shoubu after he picked up on her malice.