In the comics, the character Wong is the manservant of Doctor Strange, serving as sort of the Alfred to Strange’s Bruce Wayne.
In an interview with Den of Geek, actor Benedict Wong (The Martian) discussed his character, Wong, and the changes they took bringing him to the big screen.
He’s more of a drill sergeant. There isn’t any martial arts for Wong in Doctor Strange actually, he’s more of a drill sergeant to Kamar-Taj.
The actor Wong also hinted at a desire for the character Wong to show up in future Marvel movies, a prospect that seems likely with Infinity War lurking on the horizon.