Stefanie is a new supporting character introduced in Grand Theft Auto VI. She works as a social worker at the Leonida Department of Corrections, the state's prison system. Stefanie makes her first appearance in the game's debut trailer, where she's seen counseling Lucia, one of the game's main protagonists, during her time behind bars.

While little is known about her beyond that brief scene, Stefanie's role as a correctional counselor hints at her possible influence on Lucia's early story and the game's themes around incarceration and rehabilitation. Her inclusion marks a rare character type for the series—someone from inside the system potentially trying to help from within.