The Harpies is a Lawndale area band that includes Trent's sometimes girlfriend, Monique. They're first (and only) mentioned in "Pierce Me", where Monique says she's thinking of leaving "for real this time" to form her own band.
Fanfiction convention commonly assumes all of the band members to be women.
- In "God Save The Esteem" Monique's bandmates are named Jessie, Nico and Bex---the joke being that they are clearly distaff counterparts of Jesse, Nick and Max. They travel with Mystik Spiral and the other punks to Alternapalooza.