Prior to joining Task Force 29, Chang made a name for himself as a "digital Robin Hood", using his hacking skills to secretly steal fortunes from various megacorporations and redistributing the wealth to those in need. Accepting a position at TF29 rather than face jail, Chang now applies his skills towards hunting cybercriminals and terrorist hackers, which allows him to continue accessing the technology he loves.
Chang, being ever suspicious that Janus could be getting inside information about TF29, is constantly changing codes and passwords and acts extremely paranoid to the point he does not seem to sleep much. This extreme (but not unfounded) paranoia is annoying everyone else, who are getting tired of having their codes changed.
- There is an email on Chang's computer where a Benjamin Scott has been working on an intercepted communication they believe has ties to Janus from several years ago. If you played The Missing Link, you will recognize that it is the last line Janus said to Garvin Quinn as Jensen left Rifleman Bank Station.