Benson Dunwoody is a hot-tempered, anthropomorphic gumball machine and the main manager of the park Known for his catchphrase"Get back to work or you're fired!", he is frequently stressed by the antics of slackers Mordecai and Rigby Despite his frequent yelling and turning bright red when angry, Benson is a highly competent, dedicated manager.

Mordecai is an anthropomorphic, 6'3" blue jay and he works as a lazy park groundskeeper alongside his best friend, Rigby, but often abandons his chores to slack off, frequently triggering bizarre, supernatural events by Benson

Rigby is a hyperactive, often selfish and lazy, 23-year-old anthropomorphic raccoon and he serves as the headstrong best friend to Mordecai and a groundskeeper at a local park. Rigby is famous for his impulsive schemes Despite his annoying quirks and lack of initial education, Rigby possesses a deeply loyal side, especially when it comes to his friendship with Mordecai Rigby spends most of his days dodging work responsibilities—much to the dismay of his boss, Benson (a gumball machine). His lazy shortcuts and lack of common sense frequently escalate mundane chores into surreal, supernatural things.

Muscle Man (real name Mitchell "Mitch" Sorenstein) He is a green, stout groundskeeper at the park Despite his annoying quirks and lack of initial education, Rigby possesses a deeply loyal side, especially when it comes to his friendship with Mordecai Despite his appearance and crude behavior, Muscle Man is deeply fiercely loyal to his best friend, Hi-Five Ghost, and Before his days at the park, he was an underground athlete and bodybuilder, though he frequently leans on his famous "my mom" punchline to make inappropriate jokes whenever things go wrong.

Hi Five Ghost (often called Hi-Five Ghost) is a friendly, floating white ghost with a single hand extending from the top of his head. he is best known as the loyal best friend and high-five partner of Muscle Man. Unlike his crude, prank-loving best friend, Hi Five Ghost is generally calm, mild-mannered, and supportive of the groundskeepers at the park.

Skips, formerly known as Walks, is one of the seven main characters in Regular Show. He is an immortal yeti who works at the park as a groundskeeper. He helps Benson a lot, and fixes many of Mordecai and Rigby's mistakes. He is very wise, and has a knowledge of many things to those of the unknown, due to his past of immortality, which is why the latter two usually go to him when they have a problem.

Margaret is an anthropomorphic robin in her early 20s She was Mordecai’s love interest, and after she started to return his feelings, they kissed and dated but they broke up due to Margaret having to leave town for college in "Steak Me Amadeus". In "Just Friends", they agreed to remain just friends after, And she lives in her apartment now.