Calvin the Fighter Pilot is a minor recurring alter ego of Calvin's. He appeared in two Sunday strips.
Model fantasyIn his first appearance, Calvin the Fighter Pilot was in control of an F-4 Phantom in a combat situation over a populated rural area (possibly his hometown). Calvin's plane had grossly malfunctioned; its canopy was fused and smeared, the landing gear stuck, and the controls broken, preventing any control whatsoever. the fighter persumably crashed.
This appearance was analogous to Calvin imagining how his poorly built model F-4 would have performed in the sky.
Razing the schoolIn his second appearance, Calvin the Fighter Pilot may have been more of his own boss. Here, he piloted an F-15 over his hometown and destroyed his elementary school (in a mildly controversial strip). Although he referred to it as a "mission", he seemed to take pleasure in the destruction and referred to the building as his own school, indicating he was not under orders.
This appearance was analogous to Calvin's exasperation from having to go to school. In the Tenth Anniversary Book, Bill Watterson stated that some readers disliked the plot, and questioned whether or not they were once children themselves.