John Sorrenstein

''This article is about Muscle Man's older brother. For Margaret's cousin, see John (Margaret's cousin).''

John Sorrenstein is a character who first appeared in the episode "My Mom".

Description
Even though Muscle Man resembles a zombie, monster, or a disfigured humanoid with green skin, his brother has pale red skin and resembles a tall, plump, grown man. It is revealed that he's older than Muscle Man because he calls him 'little brother' on the radio. He arrives to teach Mordecai and Rigby a lesson on making fun of their mom. He also appears in "Trucker Hall of Fame", where he strikes a piñata in a flashback and scorpions fall on him. He also makes a cameo appearance in " Pie Contest ".

He was voiced by Steven Blum.

Appearances

 * My Mom
 * Trucker Hall of Fame
 * Pie Contest (cameo)
 * Trailer Trashed

Trivia

 * He is obese and has a muffin top like Muscle Man.
 * Unlike Muscle Man and their father, he looks more like a human being.
 * John is the third family member to appear at the park; the first is "Don" and the second is Mr. Maellard. The fourth and fifth are Low Five Ghost, and Hi Five Ghost's Father.
 * His hair looks like the hair on the picture of Muscle Man's mom, who shows Mordecai and Rigby.
 * He bears a resemblance to a Lolly Poopdeck from The Marvelous Misadventures of Flapjack, which JG Quintel also worked on.
 * His legs are oddly long for his body.
 * In "Trucker Hall of Fame" and "Trailer Trashed", Muscle Man calls him Muscle Bro.
 * It is revealed in "Trucker Hall of Fame" that he was pranked on his birthday when Muscle Dad and Muscle Man put scorpions in his  piñata  instead of candy.