Muscle Mentor
- Episode aired Sep 3, 2012
- TV-PG
- 11m
After getting fired by Benson, Rigby goes into the mentor program and Muscle man turns out to be his mentor, things don't go to plan.After getting fired by Benson, Rigby goes into the mentor program and Muscle man turns out to be his mentor, things don't go to plan.After getting fired by Benson, Rigby goes into the mentor program and Muscle man turns out to be his mentor, things don't go to plan.