Jhonny the Mall Cop is Grim's archenemy. Due to an unknown incident, he hates Grim. The feeling's mutual however. This doesn't stop Grim from going to the mall, since there are only two security guards and the other one is fine with him. Jhonny is a complete jerk, and has a feeling of superiority over the mall-goers and other employees despite the fact that he has one of the most laughed-at jobs at the mall.

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