Stitchpunk 7 is the only girl Stitchpunk and she's also the only one who doesn't look like a dirty sock monkey. She's bleached white from spending too much time out in the sun. She's supposed to be the leader of the Stitchpunks and was created to defend the others.
The lyrics say "But you weren't honest/Now get in the ground..." from "Welcome Home" by Coheed and Cambria. I'm almost determined to find a lyric in that song for every Stitchpunk.