Bass – Rick Burch (tracks: A1 to C3), Vanessa Thornton (tracks: D4 to F6)
Booking [European Jimmy Eat World] – Phillip Styra*
Booking [US, Jimmy Eat World] – Tim Edwards (2)
Design [Original Screen Prints], Artwork [Art] – Damian Genuardi
Drums – Brett Mitchell (2) (tracks: D4 to F6), Zach Lind (tracks: A1 to C3)
Edited By, Engineer [Balancing] – Dana J. White* (tracks: F6)
Guitar – Chris Daymond (tracks: D4 to F6), Tom Linton (tracks: A1 to C3)
Layout [Assistant], Design [Assistant] – Moshi Moshi (2)
Layout, Design – R. Mayo*
Legal [Jimmy Eat World] – Elizabeth Gregory*
Management [Jebediah] – Heath Bradby, Naked Ape (6)
Mastered By – Brian Gardner (tracks: D4, E5), Dana J. White* (tracks: A1 to C3), Steve Smart (tracks: F6)
Recorded By – James Adkins* (tracks: A1 to C3), Mark Trombino (tracks: D4, E5), Neill King (tracks: F6)
Voice, Guitar – Kevin Mitchell (3) (tracks: D4 to F6)
Voice, Guitar, Sounds [MTV Sound Generator] – Jim Adkins (tracks: A1 to C3)
Written-By – Jebediah (tracks: D4 to F6), Jimmy Eat World (tracks: A1 to C3)