Ms. Veronica Crabtree was South Park Elementary's main bus driver. She was voiced by Mary Kay Bergman during the first three seasons and by Eliza J. Schneider until Crabtree's death in Season Eight. While she has never performed the voice in the series, April Stewart has stated on Twitter that she performed the voice in her audition before Season Eight and is still capable of doing so.

VA - Eliza J. Schneider, Mary Kay Bergman (Seasons 1-3)