Dale "The Deltoid" Deseeko is a body builder and the main antagonist of the Regular Show episode "Power Tower".
He is super ripped and always tenses his muscles to show off. Very much more than Muscle man and probably a lot stronger. When he's working out, he wears a red cap, a vest and trousers.
Dale is short temper, but he is very proud and thinks he is the best at everything. In the end, he got taught a lesson when Muscle Man did the Shredder and beat him in The Power Tower contest.
Muscle Man and his pals were at the Power Tower gym playing ping-pong. Dale saw them and told them to get out.