I think that Griffin is just a very weird, bad guy. He must be mentally disturbed or something else. He is also very destructive; like the time he took Eric’s bike, like its his bike? That’s just crazy. Also, Griffin smoked? It’s so wrong. Why would anybody do that? But it makes sense since his dad beats him up all the time since he drinks and is a retired police officer. He must have grew up with it at home.
Eric is feeling very guilty that he became friends with a known bully. He thinks he did the right thing when he gave Hallenback (to Eric, “ketchup boy”) away to Griffin, and he realizes that. Know he doesn’t know what to do; tell his mom, give Griffin away, or keep it secret. Then he figures out that Griffin is pretending to be charming to his mom and helping the elderly at the mall, but really is just a fraud, trying to steal stuff from those people. For example, he stole some gum from an old lady called Mrs. Chaves, when helping her with shopping, and gets away with it easily.