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Hei from Darker Than Black

Hei began working for the syndicate as a child assassin to protect his sister (Bai).
He has the ability to generate deadly amounts of electricity.
He also carries a double bladed knife tied to metal wire. He uses this weapon offensively as well as using it as a grappling hook and an electricity conductor.

TheSoulReaper wrote [ Register or Signin to view external links. ]

Hei from Darker Than Black

Hei began working for the syndicate as a child assassin to protect his sister (Bai).
He has the ability to generate deadly amounts of electricity.
He also carries a double bladed knife tied to metal wire. He uses this weapon offensively as well as using it as a grappling hook and an electricity conductor.

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which is later revealed that he inherits the power from his sister.

Sorry for going off topic but was she really his sister? I don't remember that ever being mentioned. Maybe it's been awhile since I've seen it. Waiting for my limited edition to come in to rewatch the series. So excited