Mandy is the strict and sometimes bossy friend of Billy, Grim, Irwin and Pudd'n. Her true heart changes in the season 8 episode: Heart Change. She is voiced by Grey DeLisle Griffin in the series.
- According to Felicity, it is revealed that she wears pink.
- When Mandy's true heart changes at the end of the season 8 episode: Heart Change, she becomes just the way Irwin had become.