N. Vyolet Diaz
Wikisimpsons - The Simpsons Wiki
Vyolet Diaz, credited as N. Vyolet Diaz, has helped out on The Simpsons a fair bit, mainly as an assistant. She has helped as an assistant to producers and Matt Groening. She also voiced a characterized version of herself, Violet, in The Simpsons Game.
 Assistant to producers
 Assistant to Matt Groening
 Voice actor