- "How perceptive of you. Perhaps you're not as dumb as he led me to believe."
- ―Xox to Mike
Events of GTA Advance
After Mike helped Asuka Kasen to solve a problem with a pimp, Mike receives information from Asuka about a explosive expert, but when Mike arrives at his apartment, Mike finds the bomber dead and later Asuka tells him that the mafia is after him. Mike flees to Shoreside Vale and, when crossing the Shoreside Lift Bridge, he receives a message in the bomber's pager from a person named "Xox", which asks to to meet him in Wichita Gardens since they have to talk about a job.
Arriving at the alley in Wichita Gardens, Xox appears in person. Xox mentions to Mike that someone told him that he would come after him. Mike asks if he works for the guy who killed the bomb expert. Xox mentions that he don't know the killer's identity, and he assures Mike that he will discover it once he sends him to hell .
Xox calls his gang and he prepares for a shootout . However, Xox flees and meets with another group of thugs, which are eliminated by Mike. Mike takes this opportunity and also kills Xox due to his arrogance.
- His real name is never revealed. It is known as "Xox" in his pager message.