Sin City's Devon Aoki will be appear in season 3 of Arrow in a recurring guest role as a Japanese martial arts expert, it was revealed on July 1.

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Aoki will be playing the part of Tatsu Yamashiro, a character that orginated in the Green Arrow series of graphic novels published by DC Comics. Tatsu will be known for her masterful wielding of the murderous blade called the Katana. The name for Tatsu's superhero alter ego Katana is derived from her sleight of hand with the blade.

It was also revealed that Tatsu will appear in flashbacks which will help illuminate the backstory of Oliver Queen (Stephen Amell).

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This seems to tie in with a leaked casting call for season 3 which sought to fill parts of four new characters in The CW series. Tatsu descirption seems to correlate with two of the characters mentioned on the list:

"Toshi: Majorly recurring in (at least) the Hong Kong flashbacks, Toshi (late 20s/early 30s) will serve as Oliver's teacher and handler, and eventually become a friend. A well-trained operative, skilled in weaponry, combat and intelligence gathering, he is also a devoted father and husband.

Akiko: Toshi's wife is another of Oliver's Hong Kong caretakers, and is herself highly skilled in martial arts."

In the past, Aoki has featured in films like 2 Fast 2 Furious and D.E.B.S.

The finale, titled Unthinkable, of season 2 of Arrow aired on May 14 on CW.

Watch the teaser for the finale here:

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Arrow, The cw, Television