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Muscle Dad

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Muscle Dad
Trucker Hall of Fame 4
Biographical Information
Occupation: Forklift operator
Species: Human
Gender: Male
Hair color: Brown
Relatives: Muscle Man's Mom (wife)
Muscle Man (son)
John (son)
Starla "(daughter-in-law)"
Show Information
Voiced by: Fred Tatasciore
First appearance: "Trucker Hall of Fame"
Latest appearance: "Dumped at the Altar"

Muscle Dad Sorrenstein is Muscle Man's deceased father. He appeared in "Trucker Hall of Fame". He was perceived to be a trucker, but was actually a forklift operator, telling his son he was a trucker so he would be proud of him. He loved to prank truckers, random people, and even Muscle Man himself. Mordecai, Rigby, and Muscle Man call him "Muscle Dad." He died after he got mauled for putting a cactus under a cop in a bear costume who was actually a real bear. He later returned in the episode as a ghost, making amends with his son. He also made an appearance in "Power Tower" in order to congratulate his son for winning the Biceptennial.


Muscle Dad has written and left behind letters for Muscle Man to carry on his legacy

Trucker Letter

Son, if you're reading this letter,

Wedding Letter

"To Muscle Son on his wedding day,

Son, if you're reading this letter, you've accomplished something very tough. You found yourself a co-pilot to help navigate the highway of life. You do your old Muscle Dad proud. Knowing you hitched the right trailer to the right rig is no easy feat. In any relationship, it's normal to have doubts, but when you find yourself wondering if you've made the right choice, remember the old Sorrenstein rule: trust you gut. It was your gut that told you you wanted to spend the rest of your life with this woman, and it's the same gut that still fills up with butterflies when you make her smile. The Sorrensteins have big guts for a reason, son. That ain't fat in there, it's wisdom.

Good luck on your journey, Muscle Son.

Your dad, Muscle Dad


He appears to be overweight like Muscle Man, has a white undershirt, and blue jeans. He also has a brown belt with a gold buckle, black overalls with silver connectors, brown cowboy-like boots, and a trucker net-hat that is red and has "World's Greatest Trucker" on it. When he becomes a ghost, the words on the hat turn into "World's Greatest Forklift Driver." He has a brown connecting mustache, bushy brown eyebrows, and black shoulder hair.


  • Tatasciore was not the original choice to voice the character; professional wrestler Hulk Hogan was the original choice, but declined,[1] having wanted a bigger role.[2]
  • Similar to Muscle Man's "my mom" jokes, Muscle Man's dad says "my wife".
  • His hat looks similar to the "I'm Eggscellent" Net Hat, except his hat is red, while the Eggscellent Net Hat is blue.
  • Like Muscle Man, he loves pulling pranks, such as the one he did with the air horn.
  • He always wanted Muscle Man to be proud of him.
  • Since he was called Muscle Dad, it is possible that Muscle Man's mom is called Muscle Mom.
  • None of the people he worked with liked him.
  • It was revealed in "Power Tower" that he used to take Muscle Man to the Power Tower gymnasium every day.


"Trucker Hall of Fame"

"Power Tower"

"The Thanksgiving Special"

"Dumped at the Altar"



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