Peppermint Crunch has streaked purple hair, and purple eyes and coat. Peppermint Crunch's cutie mark is not shown, therefore it is unknown. It is presumed that she works in the Weather Factory. She wears a white coat and hard hat.
Peppermint Crunch made her debut appearance in Sonic Rainboom. Peppermint Crunch has only made one appearance throughout the whole My Little Pony: Friendship is Magic series, meaning her first appearance was her last appearance.