He is known for co-writing episodes of the Fox science fiction supernatural drama series The X-Files with his writing partner, Glen Morgan.

During his youth, he met his future writing partner Glen Morgan at El Cajon Valley High School.

Wong and Morgan began working with Chris Carter in 1993 on the science fiction/drama The X-Files, about two FBI agents investigating the paranormal, filmed in Vancouver.

Wong also made his television directing debut with the conspiracy-themed "Musings of a Cigarette Smoking Man", written by Morgan.

During 1995, both Wong and Morgan were hired by producer Joel Silver to write the third intended Tales from the Crypt movie called Body Count.

In 2009, Wong directed the live-action film adaptation of the anime and manga media franchise Dragon Ball.

[7] As part of the initial production crew on The X-Files, Wong was among the most influential four writer-producers who worked closely with X-Files creator Chris Carter to define the characters, plots and aesthetics of the new series (the others were Glen Morgan, Howard Gordon and Alex Gansa).

Wong was responsible with his longtime writing partner Glen Morgan for introducing a number of elements that defined The X-Files throughout its run.