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E-91 Lady Ninja

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This character exists primarily or exclusively within the Sonic X continuity.
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.

E-91 Lady Ninja (E - 91 (クノイチ) E - 91 (Kunoichi)?) is a character that appears in the anime series Sonic X. It was a ninja-based E-Series robot created by Dr. Eggman.



Chaos Emerald Saga

The Lady Ninja was dispatched to retrieve the red Chaos Emerald, but ran into trouble in the form of Knuckles the Echidna and Rouge the Bat. Eventually, she had Knuckles on the ropes, but Knuckles' human friend Hawk dumped water over her, short-circuiting her. Taking advantage, Knuckles hit her with a super punch, destroying her.


E-91 Lady Ninja is the only E-Series robot Doctor Eggman built with a female personality.

Powers and abilities

E-91 Lady Ninja has many skills such as imitating shadows and knocking characters out without touching them. Despite her thin appearance, she is also strong enough to swing around a weight at sixteen tons. She also had an entire arsenal of different techniques similar to ninjutsu.[1]


A robot based on a female ninja, E-91 was equipped with shurikens, gliders, an electrocution net, a chain with a weight at the end that could either be small or turn into a wrecking ball.


  • Lady Ninja's Japanese name "Kunoichi" translates into "Female Ninja". Her Japanese name is also a pun; when the word is separated, it means "91" (Ku-no-ichi).
  • Her head shape is similar to Bokkun's.
  • She actually speaks when chasing down Rouge, saying, in a robotic female voice, "I want that Chaos Emerald!" And when she grabbed the Chaos Emerald from Hawk, she said "Thank you.".She also apparently made a few grunt noises as well.



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