" Terror Tales of the Park IV " is the for Season 6 of Regular Show , originally airing on October 29, 2014. This anthology episode follows the park crew as they drive to visit Muscle Man's mother, telling scary stories along the way to keep Muscle Man awake. Segment Summaries
The episode consists of three distinct "non-canon" horror stories told by the characters: Muscle Man [S6E4] Terror Tales of the Park IV