Events of TBoGT
Joni works with Luis as part of the "Club Management" side-missions. Luis keeps in touch with her via headset whilst scanning the dance floor from the security room for trouble in the side-mission Club Management, telling Luis to check out certain areas where she sees disturbances.
Occasionally, Joni will call Luis to her office and offer Luis sexual favors such as a sexual dance, giving him oral sex, or giving him a blowjob. Sometimes she will scold Luis if the player had sex with other women.
- Joni constantly teases Luis about his penis size. At the beginning of the club management missions, she will make comments such as "you have a great body L, shame about the little guy!"
- Just like with any other club employee, killing Joni will cause her to respawn the next time you come back to Maisonette 9.
- If you purchase the Episodes from Liberty City (disc version), it comes with a poster of Joni on one side, and a map of Liberty City on the other.
- Also, if you buy The Complete Edition of GTA IV, a poster of Joni, Gracie, and Lola comes with it.
- Joni appears different in the artwork than she does in the game itself, with thinner lips and differently shaped eyes.
- During normal gameplay Luis can kill Joni while hanging out at Maisonette 9.