User blog comment:SodaCat/Johnny Vincent is a cheater?/@comment-4059927-20150505053304/@comment-2173402-20150508030700

Did Gary really convince him though? If you remember, Derby's relaxing by the fire in Harrington House, amused by all the fighting going on. If anything, I'd say that Gary convinced the other preps, and Derby, not seeing a disadvantage, just let them. Gary doesn't even convince Derby to hate Jimmy--Derby starts hating Jimmy after he thinks that Jimmy stole their trophies. He even says, "nobody cares about you, or Gary."

I'd say Derby is the only character Gary wasn't able to influence.