Stewart started acting at age 12 while her voice acting career began in 2004 with
South Park.
South Park Stewart started her voice work on
South Park in 2004 starting with
season 8 after the departure of
Eliza Schneider. Prior to this, many of the female characters on the series were originally voiced by
Mary Kay Bergman. Bergman originally provided the voices for
Wendy Testaburger,
Liane Cartman,
Sharon Marsh,
Carol McCormick,
Shelley Marsh,
Mayor McDaniels,
Principal Victoria,
Veronica Crabtree,
Sheila Broflovski and other various female characters. After Bergman's death in 1999, Schneider and
Mona Marshall replaced Bergman for roles of many of the female characters. Marshall still provides voices in the show while Schneider later left the series after
season 7 over a contract dispute in 2003. Prior to Stewart's hiring, Schneider provided the voices for Wendy, Liane, Sharon, Carol, Shelley, Mayor McDaniels, Principal Victoria, and Ms. Crabtree, while Marshall provided the voice for Sheila. Alongside both Schneider and Marshall's aforementioned characters, Schneider and Marshall also voiced various other characters in the series. After Schneider's departure, Stewart now provides the voices of Schneider's aforementioned characters, and other various characters she voiced.
Other roles Stewart also provided the voices of Maria Rivera on
Nickelodeon's
El Tigre: The Adventures of Manny Rivera, Raava and Fire Lord Izumi in
The Legend of Korra, the main antagonist Bloody Mary in
Infamous: Festival of Blood, and Prisoner X in
Minecraft: Story Mode. ==Filmography==