Regular Show: Season 4 - 40 Episode s
4x1 - Exit 9B (1)
October 1, 2012
Mordecai and Rigby must save the park after the rest of the gang are brainwashed.
4x2 - Exit 9B (2)
October 8, 2012
Mordecai and Rigby must save the park after the rest of the gang are brainwashed.
4x3 - Starter Pack
October 15, 2012
Mordecai and Rigby want to stop Muscle Man from screwing with Thomas.
4x4 - Terror Tales of the Park II (1)
October 15, 2012
While on their drive to a Halloween party, Mordecai and Rigby tells scary stories to Benson, Pops, Skips, Muscle Man, High Five Ghost and Thomas.
4x5 - Terror Tales of the Park II (2)
October 15, 2012
While on their drive to a Halloween party, Mordecai and Rigby tells scary stories to Benson, Pops, Skips, Muscle Man, High Five Ghost and Thomas.
4x6 - Pie Contest
October 22, 2012
Mordecai and Rigby want to prove to Benson that they can be judges at the pie contest.
4x7 - 150 Piece Kit
October 29, 2012
Benson wants to prove that he performed a famous drum solo.
4x8 - Bald Spot
November 12, 2012
Muscle Man wants to hide his bald spot at all costs.
4x9 - Guy's Night
November 19, 2012
Pops wants to beat the milk challenge to prove he’s one of the guys.
4x10 - One Pull Up
November 26, 2012
Rigby has never been known for his upper-body strength, so when the park employees have to go into the doctor and get their physicals, Rigby has trouble doing even one pull up, and so he must find a way to do so or get fired.
4x11 - The Christmas Special (1)
December 3, 2012
The house is decorated, the guests have arrived and it seems like it's the season to save Christmas when the gang finds themselves faced with the task of destroying a present for Santa that has the potential to destroy them and the holiday.
4x12 - The Christmas Special (2)
December 3, 2012
The house is decorated, the guests have arrived and it seems like it's the season to save Christmas when the gang finds themselves faced with the task of destroying a present for Santa that has the potential to destroy them and the holiday.
4x13 - T.G.I. Tuesday
January 7, 2013
It’s Margaret’s last night of freedom before she transfers to a new college. So Mordecai, Rigby and Eileen decide to surprise her with the biggest party of her life. What could possibly go wrong?
4x14 - Firework Run
January 14, 2013
After Mordecai, Rigby and Muscle Man squander the fireworks that Benson had purchased for an upcoming event at the park, the three have to go and find more to replace them before Benson blows a fuse and they lose their jobs.
4x15 - The Longest Weekend
January 21, 2013
Muscle Man tries not to contact Starla for an entire weekend.
4x16 - Sandwich of Death
January 28, 2013
Benson eats a magical, deadly sandwich that Mordecai and Rigby bought, so the trio must travel with the restaurant's manager, Sensei, to find the cure.
4x17 - Ace Balthazar Lives
February 4, 2013
Mordecai and Rigby want to reunite the band Adrenaline.
4x18 - Do or Diaper
February 11, 2013
Muscle Man, Rigby and Starla are annoyed about Mordecai's awkward goodbye to Margaret so they try to get Mordecai to tell Margaret how he feels about her.
4x19 - Quips
February 18, 2013
Skips intervenes to stop his cousin's bad jokes.
4x20 - Caveman
February 25, 2013
When Mordecai and Rigby meet a caveman, they decide to put his unique prehistoric physique to good use: chugging cheese! But could this caveman actually turn out to be a Neanderthal nuisance?
4x21 - That's My Television
March 4, 2013
Mordecai and Rigby help their favorite '80s sitcom star, RGB2, escape from the studio lot and into the mountains so he can avoid starring in a revival of his show.
4x22 - A Bunch of Full Grown Geese
March 25, 2013
Mordecai and Rigby have to get rid of some geese that are causing problems at the park.
4x23 - Fool Me Twice
April 1, 2013
Mordecai and Rigby want to win the grand prize on a Japanese game show.
4x24 - Limousine Lunchtime
April 8, 2013
Rigby stains Mr. Maellard's expensive white limousine with a meatball sub, so the guys have to clean it before Mr. Maellard gets back from vacation.
4x25 - Picking Up Margaret
April 15, 2013
Mordecai offers Margaret a ride to the airport.
4x26 - K.I.L.I.T. Radio
April 22, 2013
Muscle Man wants a local radio station to play the song he wrote for Starla.
4x27 - Carter and Briggs
May 6, 2013
The guys enter a donut contest in hopes of winning a cameo on their favorite cop show.
4x28 - Skips' Stress
May 13, 2013
Skips has to lower his stress for health reasons.
4x29 - Cool Cubed
May 20, 2013
Thomas must save his brain after he chugs a slushy that freezes his brain.
4x30 - Trailer Trashed
May 27, 2013
Muscle Man tries to save his trailer after it fails a health inspection.
4x31 - Meteor Moves
June 10, 2013
Mordecai plans to kiss Margaret at a meteor shower.
4x32 - Family BBQ
June 17, 2013
Mordecai tries to shake hands with Margaret's father.
4x33 - The Last LaserDisc Player
June 24, 2013
The guys need to obtain a LaserDisc player in order to watch the director's cut of a cult classic.
4x34 - Country Club
July 1, 2013
Mordecai and Rigby have to rescue the golf cart from a bunch of rich people at a country club.
4x35 - Blind Trust
July 15, 2013
Benson must trust Mordecai and Rigby to help get him down a mountain.
4x36 - World's Best Boss
July 15, 2013
The park employees want to give Benson a special mug.
4x37 - Last Meal
July 22, 2013
Muscle Man wants to binge on his favorite foods before going on a diet.
4x38 - Sleep Fighter
July 29, 2013
The park guys must help Muscle Man to stop fighting in his sleep.
4x39 - Party Re-Pete
August 5, 2013
Mordecai and Rigby must save Benson from an evil party company.
4x40 - Steak Me Amadeus
August 12, 2013
Mordecai wants to ask Margaret to be his girlfriend.