Jack is a criminal and prefers being called "The Joker." He is close friends with Roman "Black Mask" Sionis. He enjoys playing mind games with many of the citizens of Los Santos. He is known for planning elaborate heist and getaways.
Joker often appears when people are having mental breakdowns. He seems to enjoy forcing people to question their sanity. He appeared to Officer Richard Dark during his 51-50 hold at Parsons and taunted him. After the death of Deputy Michael Dias, he appeared to Deputy Lauren Forcer taunted her, then vanished. 
- "Guess who's in the nuthouse now, it's little Richard Dark."
- "At the rate you officers are losing it, they're going to have to open up another wing at Parsons."
Fun Facts Edit
- This character is based on DC Comics Joker.
- He has an infatuation with Trooper Jackie Snow.
- Joker often mentions the movies he's appeared in.
- He is known for his maniacal laugh and distinct look.
- After being burned, he wore bandages on his head.