Greg Buehl (played by Michael Shannon) is the former abusive boyfriend of B-Rabbit's mother, Stephanie. It is mentioned in the freestyle B-Rabbit does to the song "Sweet Home Alabama" that Greg is around B-Rabbit's age and went to the same school that B-Rabbit and Future attended. After Greg finds out about an eviction notice, a fight breaks out between B-Rabbit and Greg which is only stopped due to Lily's fear. After this, Greg leaves Stephanie and isn't seen again.

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