Justin Spitzer
Justin Spitzer
Name Justin Spitzer
Age 12
Gender Male
Actor none
Film Appearance? No
Online Appearance? No
Book Appearance? Yes

Justin Spitzer is a student that attends Westmore Middle School in Greg Heffley's year. He attended the Lock-In as a mole, telling teachers where the kids hid their junk food and was being payed off with the kids' snacks by the teachers. He only appears in The Ugly Truth.