She is also the secondary antagonist of the Halloween special Underfist: Halloween Bash.
She is voiced by Rachael McFarlane, who is also the voice of Eris.
Mindy has ginger colored hair and freckles on both her cheeks. She wears a typical school uniform which includes the blue skirt, white button-up shirt and pink Mary Jane shoes, she can be seen without her school uniform in some episodes.
Mindy is a snobby, stuck-up, selfish, mean, rude, and spoiled stereotypical popular girl who is the arch-nemesis of Mandy. There are also times when Mindy has actually tried to kill Mandy.
She is also shown to be able to hold a grudge for a very long time, as she hates Mandy for rejecting her when they were much younger; however, she can put aside her hatred towards Mandy if it means survival, an example being in Wrath of the Spider Queen, when she helped Mandy fight the spiders.
Despite being mean and arrogant like Mandy, she is not as smart as her and can be considered an airhead, for example is that she thinks that Paris and Toronto are countries and that Africa is a city.