April Stewart is an American actress and voice actress. She is perhaps best known for voicing Wendy Testaburger, Liane Cartman, Sharon Marsh, Carol McCormick, and other characters in Comedy Central's animated sitcom South Park. She also played Pandora in the Danny Phantom episode Boxed Up Fury, and Ravaa and Fire Lord Izumi on The Legend of Korra. She even provided additional voices in Family Guy.
For Disney, Stewart voiced Marci McFist in Disney XD's Randy Cunningham: 9th Grade Ninja, and Lady Zartra and Power Princess in Avengers Assemble. She also provided additional voices in Phineas and Ferb and Wreck-It Ralph.