"Arrow" Season 3 has another martial arts expert coming to the flashback world of Oliver Queen: Karl Yune will play Maseo Yamashiro in several episodes when the show returns in the fall.
《绿箭侠》第三季我们将会在Oliver Queen的闪回回忆中再看到一位英雄:Karl Yune将会扮演Maseo Yamashiro在第三季中多次出现。

According to TVLine, Maseo is one of Oliver's handlers when he is taken to Hong Kong by A.R.G.U.S. Both a teacher and a friend to Oliver (Stephen Amell), Maseo is also the husband of Tatsu Yamashiro.
据TVLine报道,Maseo是Oliver在香港时的操纵人。同时也是Oliver的老师和朋友,Maseo还是Tatsu Yamashiro(也就是Katana)的老公。

The full relationship between Oliver and the Yamashiros will only become clear when "Arrow" Season 3 premieres Wednesday, Oct. 8 at 8 p.m. ET/PT on The CW.