Backing Vocals – Avril Lavigne (tracks: 4 to 6), Butch Walker (tracks: 4 to 6)
Bass – Lukasz Gottwald (tracks: 1 to 3, 7, 9, 12)
Bass, Guitar, Keyboards, Programmed By, Written-By – Butch Walker (tracks: 4 to 6)
Design [Logo Design] – Sonia D’Aloisio
Design [Logo Design], Layout [Front Cover Layout] – Robb Dipple
Drum Programming [Addictive Drums] – Dr. Luke (tracks: 3, 7, 9)
Drums [Live] – Steven Wolf (tracks: 1, 7, 12)
Engineer – Aniela Gottwald* (tracks: 1, 3, 9), Chris Holmes (3) (tracks: 2, 3, 9), Josh Wilbur (tracks: 2, 3, 9), Karl Egsieker (tracks: 4 to 6), Keith Gretlein (tracks: 1 to 3, 7, 9, 12), Matt Beckley (tracks: 1, 3, 7, 9), Mike Caffrey (tracks: 1, 7, 12), Rouble Kapoor (tracks: 2, 3, 7, 9), Sam Holland (tracks: 1 to 3, 7, 9), Seth Waldmann (tracks: 1 to 3, 7, 9, 12), Tatiana Gottwald (tracks: 2, 7, 12), Tom Syrowski (tracks: 1 to 3, 7, 9, 12), Wesley Seidman (tracks: 2, 3, 7, 9)
Engineer [Additional Protools] – John Hanes (tracks: 1, 3, 4, 9)
Engineer [Assistant] – Tatiana Gottwald (tracks: 1, 3, 9), Tim Roberts (tracks: 1, 3, 4, 9)
Executive-Producer – Avril Lavigne
Guitar – Deryck Whibley (tracks: 4, 10, 11), Lukasz Gottwald (tracks: 1 to 3, 7, 9, 12)
Mastered By – Stephen Marcussen (tracks: 1 to 9, 12)
Mixed By – Chris Lord-Alge (tracks: 2, 8, 12), Serban Ghenea (tracks: 1, 3, 4, 9), Tom Lord-Alge (tracks: 5 to 7, 11)
Photography By [Cover And Other] – Deryck Whibley
Photography By [Other] – Mark Liddell
Producer – Butch Walker (tracks: 4 to 6), Deryck Whibley (tracks: 10, 11), Dr. Luke (tracks: 1 to 3, 7, 9, 12)
Producer [Additional Production] – Matt Beckley (tracks: 1 to 3, 7, 9, 12), Steven Wolf (tracks: 1 to 3, 7, 9)
Programmed By – Dr. Luke (tracks: 1, 3, 9)
Vocals – Avril Lavigne
Written-By – Avril Lavigne, Evan Taubenfeld (tracks: 7, 8, 10, 11), Lukasz Gottwald (tracks: 1 to 3, 9, 12)