Muscle Man

Mitch "Muscle Man" Sorrenstein is a main character of Regular Show. He is one of the groundskeepers at the Park. He is a green, strong and obese monster and/or disfigured humanoid, who is often seen with his best friend, Hi Five Ghost. Muscle Man made his first debut as a cameo character in the Pilot, and then made an official appearance in The Power. Muscle Man is voiced by Sam Marin.

Appearance
Muscle Man is a green, obese man with shoulder-length, greenish brown hair. He wears a long-sleeved grayish-blue shirt, dark gray pants, and black shoes. In the Trucker Hall of Fame when he was a kid, he still looked the same, but with freckles. As a teenager, he was tall, skinny, and had zits.

Personality and Traits
Muscle Man is a type of monster and/or disfigured humanoid that works in the park along with Mordecai and Rigby. As of the episode Gut Model, he has worked for the park for 5 years. Although Benson considers him to be hard-working, Muscle Man (along with Hi Five Ghost) has been revealed to do more work than Mordecai and Rigby, despite the fact that all four of them are slackers. In Muscle Woman, however, they tend to slack off more than Mordecai and Rigby. In My Mom, it's shown that he has a lot of friends, most in which love his constant "My Mom!" jokes, which everyone else at the park gets annoyed with. He's best friends with Hi Five Ghost, who loves his jokes. Ignorant yet clever when it comes to pranks, he's always either insulting Mordecai or Rigby, or trying to prank them (ex. "My Mom", "See You There"). But he does care about his mom as shown in My Mom when he got very angry when Mordecai and Rigby made fun of his mom. In response, he brought his brother, John, to give Mordecai and Rigby a punishment for ridiculing their mother.

Despite being obese and lazy, there is a story behind Muscle Man's nickname (as revealed in Peeps). In the episode, he said that he is losing muscle mass from the stress Peeps put on him, so he may have muscle mass. He also loves to mess around with Mordecai and Rigby.

Skills/Habits

 * My Mom Jokes - In many episodes, Muscle Man has made "my mom" jokes. Instead of the iconic "your mom" jokes, Muscle Man flips it and ends of making fun of his own mom.
 * Strength - Other than being obese, Muscle Man is very strong.
 * Pranking - Along with his best friend, Hi Five Ghost, they are often pranking Mordecai and Rigby.
 * Trumpet Player - In This Is My Jam, he and Hi Five Ghost are able to play the trumpet together; though, Muscle Man only blew into the trumpet as Hi Five Ghost was doing the fingering.
 * Gut Model - In Gut Model, Muscle Man is a very good "model" when giving off his gut looks.
 * Temporary Tattoos - Muscle Man obviously likes getting temporary tattoos. Since Trash Boat and Muscle Woman, he has two tattoos: One of a dog and one that says "STARLA".

Starla
Starla is Muscle Man's girlfriend that is seen in Muscle Woman. Muscle Man has been dumped by Starla twice, presumably for not being willing to share his feelings. But at the end of the episode, they are back together and are presumed to still be in a relationship.

Hi Five Ghost
Hi Five Ghost is to Muscle Man as Rigby is to Mordecai, but we don't see them together as much. Mordecai shows affection for Rigby much more than Muscle Man does to HFG. They are usually seen together in the episodes. He usually gives a high five right after Muscle Man says a "My Mom" joke. In "My Mom!," the two seem to slack-off as much as Mordecai and Rigby.

Mordecai
Out of the two protagonists, Mordecai seems to dislike Muscle Man more. He is annoyed by the constant "My Mom" jokes and even confronts Muscle Man about it in "My Mom!". Besides that episode, there is not much interaction. Muscle Man does throw his shirt at Mordecai in "Caffeinated Concert Tickets", but that may have been an accident rather than a direct confrontation. He may have been doing this just so that they would not have to do his work.

Rigby
Rigby seems to like Muscle Man slightly more than Mordecai. He likes to hang out with him in "My Mom!", and seems to get along with him very well, yelling "Ohhhhhh!" along with him at the taco truck. They do have some confrontations though. In "Meat Your Maker", he goes to say Muscle Man pushed him at a party (though Mordecai quickly says Muscle Man was not even there). Also by the end of "My Mom", Rigby goes on to say how he hates Muscle Man. Also in "Death Punchies", Muscle Man is forced to be look out, even though his eyes were punched out by Rigby. They also hang out in "The Night Owl".

Benson
Benson trusts Muscle Man far more than Rigby and Mordecai, as established in "Appreciation Day" and "My Mom". He does fire Muscle Man though in "Don" and "Under the Hood." Benson also seems to understand Muscle Man and his antics, as demonstrated in "But I Have A Receipt" and "Free Cake," not yelling at Muscle Man when he put "My Mom" on the list. He does not confront Muscle Man when he turns off the lights and unzips his pants in "Free Cake", saying, "It's not that kind of party, Muscle Man."

John
John is Muscle Man's older brother, who was seen in "My Mom" and Trucker Hall of Fame.

Muscle Dad

Muscle Dad is Muscle Man's father who is seen in Trucker Hall Of Fame.

Scottie
Scottie is the person in charge of getting people to the Crash Pit. When Muscle Man and Hi Five Ghost find a car to run into the Crash Pit, he gets people to watch.

Bobby
Bobby works at the nursery helping people carry heavy plants. He and Muscle Man are friends. He thinks Muscle Man's "My Mom" jokes are hilarious.

Jimmy
Jimmy works at the TV Warehouse and owes Muscle Man something. He got fired for giving him a TV so that they can beat the hammer.

Taco'Clock Worker
He seems to have a friendship with the Taco'Clock worker. He also laughs at Muscle Man's "my mom" jokes.

Muscle Man-Themed Content

 * Muscle Maker 3000 (Muscle Woman)
 * Muscle Man's Car (Brain Eraser)
 * Muscle Man's Costume Party (See You There)
 * Muscle Man's Mom (My Mom)
 * Muscle Man and Hi Five Ghost's Trailer (several episodes)
 * Muscle Man and Hi Five Ghost's TV (Rage Against the TV)
 * Muscle Man's Dumbbells (Concept art)
 * Muscle Man's Outfit (Outfits Muscle Man has worn.)
 * Muscle Man's Sports Equipment (Big Winner)
 * Muscle Man's Trumpet (This Is My Jam)
 * Muscle Man's Baseball Bat (Rigby's Body)
 * Muscle Man's Water Slide (Dead at Eight)

Trivia

 * In the episode Muscle Woman, his real name is revealed to be Mitch Sorrenstein.
 * In the same episode, Mordecai refers to Muscle Man as a "human", even though he does not resemble one.
 * It is revealed that Muscle Man is a human because in Muscle Woman, Mordecai pointed out that he was "still human" when explaining the situation to Starla but the animators could have made a mistake; however, it was practically believed that children would comprehend the word 'human' better because it is easier to say that way.
 * Muscle Man also appears to be drawn similarly to characters from The Marvelous Misadventures of Flapjack, a Cartoon Network cartoon J.G. Quintel worked on before starting Regular Show.
 * More often than not, Muscle Man removes his shirt during the episode he appears in.
 * Despite having a high school education, Muscle Man doesn't know how many days are in a year.
 * Muscle Man's "My Mom" jokes are similar to "Your Mom" jokes, but Muscle Man words the jokes so they insult himself rather than others, which is the intention of "Your Mom" jokes.
 * Muscle Man's voice tone turned lower after Caffeinated Concert Tickets.
 * Muscles Man's catchphrase for getting hurt is "Oh no, bro," which is seen in Death Punchies, Rage Against the TV, and Slam Dunk.
 * In Over The Top, Muscle Man lasted the longest in the arm wrestling match with Skips.
 * He thinks an internet meme called Wedgie Ninja is funny, as shown in Go Viral.
 * Muscle Man often goes berserk when he is injured/hurt (ex. See You There, Over The Top, Karaoke Video, Death Metal Crash Pit).
 * Even though Muscle Man was fired in "Don," he still works at the park in the next episode. He possibly could have been hired back because The Park didn't have enough workers.
 * Additionally, Muscle Man and Hi Five Ghost were fired in Under the Hood because Mordecai and Rigby thought that he did the graffiti; of course, the former group had been rehired due to the true culprit being caught.
 * Muscle Man resembles Yajirobe from Dragon Ball Z with his voice, body shape and attitude.
 * Muscle Man's shown/known family is similar to Al Borland's family on Home Improvement, both have brothers that look similar to them and unseen moms.
 * Muscle Man is called Muscle Son by Muscle Dad.
 * Throughout at least the second season, there is a reference to Muscle Man having some sort of odor: in The Night Owl, Mordecai says that he smells like barf, but this is never again touched upon.
 * In season 3, he had been nicer and friendlier to Mordecai and Rigby.
 * In "Do Me A Solid" and "First Day," he seemed to like Margaret.
 * In "Dead at Eight," Muscle Man was trapped in Death's Glass Sphere.
 * In "Dead at Eight," Muscle Man has his second death.
 * Muscle Man is the only character that has been shrunk.
 * Muscle Man had freckles when he was younger, but not anymore.
 * Muscle Man also wore earrings as a teenager.
 * His name "Mitch" is of English origin. It can come from the names Michael or Mitchell. The name Mitch means "Who is like God".
 * Muscle Man's real name Mitch was revealed in Muscle Woman.

Gallery
The gallery for Muscle Man can be viewed here.