Bonzo is always angry with Ender. Bonzo is angry with ender because he doesn't want Ender in his army because of how low is age is. Since Enders age is so low Bonzo doesn't think he can do anything but be a sitting target in the battle room. In Ender's Game it reads “ You will stay out of the way when we're training in the battle room,” (pg.77). The age gap between the other boys in the the army and ender is so large that being friends is weird and they don't share anything in common. Ender’s Game states “They were all much larger … twelve and eleven years old…,” (Pg.74). Bonzo will stay angry with Ender until Ender can be traded to another army.
