Allies from both sides rally together for the epic fight. However, Pops and Anti-Pops are once again at a stalemate. Mordecai and Rigby are forced to jump between the two factions.

Skips tells Mordecai and Rigby the story of how he became immortal.

Mordecai wants to win a hat for Rigby by eating a huge omelet.

The guys need to obtain a LaserDisc player in order to watch the director's cut of a cult classic.

Skips tries to learn how to use a computer when Mordecai and Rigby need him to fix a virus.

Mordecai and Rigby have to get rid of some geese that are causing problems at the park.

Mordecai and Rigby come across a family of ducks living in a fountain at the park - and take quite a shine to them.

Mordecai and Rigby must save the park after the rest of the gang are brainwashed.

When Mordecai and Rigby make a fake band, they accidentally enter for a live performance, even though they haven't a clue how to play any instruments.

When Mordecai and Rigby accidentally knock Benson unconscious, they try to make it seem like it was a dream by dropping him off at his apartment, but end up taking him to his neighbors party to help him impress her.

Mordecai and Rigby plan to host a scary-movie night at the abandoned cemetery in the park so they can raise enough funds to earn a paid-day off.

Mordecai tries to fix his bad kiss with Margaret by using Rigby's time machine.

Mordecai wants to ask Margaret to be his girlfriend.

The gang tries to win a pair of fuzzy dice for Pops' Birthday. But its not for sale and it is only located in a smelly, greasy arcade known as the "Fun-Fun Zone".

Mordecai tries to shake hands with Margaret's father.

Rigby changes his name and has to change it back when he realizes that he picked the stupidest name ever... "Trash Boat."

When Mordecai and Rigby make it to the final level in a video-game, their T.V. screen goes black. Now they must find a new T.V. so they can finish the game.

The crew arrive at Lolliland early, so they set up traps for Anti-Pops. Things seem to go off smoothly, but Anti-Pops is unfazed by their futile attempts.

Mordecai and C.J. want to go on a romantic date.

Mordecai and Rigby challenge Muscleman and High-Five Ghost to a game of basketball for computer rights and so Mordecai can make Margaret a website.

Rigby suspects that Thomas is a Russian Spy, and when he finds out that it's true, it's up to him, Mordecai, and Benson to save the park from the KGB.

Mordecai and Rigby have to sneak into the dome laboratory to get Benson's keys back.

Mordecai and Rigby discover Margret's diary while she is away and accidentally break the lock. Worried that she'll think they read her diary, they set about trying to repair it.

Mordecai plans to kiss Margaret at a meteor shower.

Benson wants to prove that he performed a famous drum solo.

Rigby gets a terrible, terrible song stuck in his head and will go to any lengths to get it out.

Mordecai and Rigby try to get Benson to admit they are cool when he bans them from using the cart.

Skips accidentally kills Rigby while arm wrestling and fights Death to get him back.

Mordecai and Rigby expose a bad board game's flaws when the owner refuses to give them a refund.

After Pops consumes a double glazed apple crisp, the gang must figure out a way to make Pops crash.

Death will spare Muscle Man's life if Mordecai and Rigby babysit his kid and have him asleep before he returns.

Thomas tries to prove his worth by retrieving the park founder's statue.

Mordecai accidentally pocket dials Margaret on his cell phone, and he has to erase the embarrassing message he left on her voicemail.

Mordecai thinks that Margaret is engaged, and he wants to find a girlfriend as soon as possible to try and get over her.

Rigby challenges Mordecai to get a picture inside Death Bear's cage at the abandoned zoo to prove that he isn't afraid of the old folklore.

In an homage to all things mecha anime, Mordecai and Rigby have to get rid of a cassowary in the park, which turns into an epic battle over merchandising rights when the baby ducks and full-grown geese return to enlist the help of the park workers to defeat a pair of lawyers and their iron-clad contracts.

The guys help Pops train.

After a time-traveling tornado sends an 18th-century Skips to the present, Mordecai and Rigby have to help present Skips return his teenage self to his time or else he will die.

Mordecai offers Margaret a ride to the airport.

After watching a scary movie about a British Taxi, the guys have to help Rigby overcome his fears.

Mordecai and Rigby have to destroy a promotional video tape of them at a Karaoke Club singing and making fun of everyone at the park, when the gang decides to go there.

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.

Mordecai and Rigby play a prank on Daylight Saving Time by setting all of the clocks in the park at the wrong time, which leads to disastrous results.

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.

The morning after being hired at the park, Mordecai and Rigby both look to obtain Pops' old couch and agree to play a game of rock, paper, scissors to decide who gets it.

Benson is determined to prove he was right about the date of the "Dome Experiment".

Skips has to lower his stress for health reasons.

The gang try to support Pops for the imminent battle against Anti-Pops.

Benson buys a surveillance system to track Mordecai and Rigby's every move when their constant slacking pushes him to the breaking point.

Mordecai and Rigby bust up the cart and have to go on a road trip with Benson to the dealership before the warranty expires.

Mordecai and Skips decide to work together to win the grand prize in a video game tournament. When Rigby finds out Mordecai chose Skips instead of him, his feelings are hurt.

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?

Pops wants to beat the milk challenge to prove he’s one of the guys.

Mordecai and Rigby try to outfox Benson using holograms so that they can eat the best burgers in the world.

Mordecai fears of being embarrassed by his mother when C.J. wants to come over for a family dinner.

When Mordecai accidentally sees Pops naked, Rigby tries to find a way to get the image out of his head.

Rigby has to give a speech at his high school graduation. The speech will be broadcast live on a TV show called "Inspire America," and Rigby wants to make it memorable.

Rigby hires a temp to do his work but gets jealous when the temp becomes tight with Mordecai.

When Benson tries out an ostrich and a possum as replacements for Mordecai and Rigby, they have to fight for their jobs.

Mordecai and Rigby team up with Muscle Man and Hi Five Ghost to win a radio contest, but the contest creator wants to turn them against each other.

Mordecai and Rigby try street-performing to earn extra money quickly for a video game, but soon compete with another street performer who uses their act to his advantage.

Mordecai and Rigby have to do Skips' work for the day when he cashes-in a coupon that they gave to him on his birthday.

Mordecai and Rigby try to earn respect by increasing their skills on "Broken Bones", an arcade game in the Coffee Shop.

When Mordecai and Rigby try to prove that they are good prank callers by pranking the "Master Prank Caller", they are inadvertently transported into the 80's.

Mordecai and Rigby want to win the grand prize on a Japanese game show.

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.

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.

Mordecai and Rigby look for help when their awesome house party turns lame.

Mordecai and Rigby are charged with bringing Benson tortillas.

After an important portrait of their boss Benson is ruined, Mordecai and Rigby attempt to repaint it before it is awarded to him.

Mordecai begins to make fun of Rigby for not having a high school diploma so Rigby decides to drink a chemical that is supposed to make him smarter.

When Mordecai and Rigby need a raise to fix a hole in their bedroom wall, they use a magical keyboard that allows them to do anything they want.

Benson must trust Mordecai and Rigby to help get him down a mountain.

Benson finds a suit in the park and begins wearing it to command respect - only to learn that the government made the suit, and corrupt leaders and business people will stop at nothing to get it.

After his stockbroker is arrested on fraud charges, Muscle Man and Starla compete on a game show where couples compete to win an all-expenses-paid wedding.

An alien pod crashes onto Earth and an alien horse known as Party Horse turns to Mordecai and Rigby to help him pass a U.S. History test.

Mordecai and Rigby are determined to win a happy birthday song contest so they can get a year's supply of cake.

Muscle Man tries not to contact Starla for an entire weekend.

Muscle Man is sick of being used for all the strong jobs at the park. So he decides to work at an office to show people he's smart too.

The guys must get Muscle Man's favorite shirt back on him before he awakes.

Muscle Man wants to binge on his favorite foods before going on a diet.

Pops strives to learn how to surf in order to reconnect with nature after havin a bad day with it.

Skips intervenes to stop his cousin's bad jokes.

After Mordecai and Rigby crash their cart into the garage door, they have to replace it with help from Pops and the Eggscellent knight, or their boss Benson will have them fired.

Mordecai and Rigby must get Benson to stop watching cat videos.

Mordecai and Rigby fight with the power of death-kwon-do to help Sensei obtain a new stomach for his much need stomach transplant. But Sensei's trainee, Jimmy, wants it to himself.

Mordecai and Rigby want to go to a reunion concert.

Mordecai tries to avoid further relationship problems when he attends Margaret's 1000th chopper flight party for her father.

Rigby goes to the dump to get back his trampoline that he regrets throwing away.

The guys need to retrieve a wallet on a hostile planet.

Mordecai, Rigby, C.J., and Eileen head to the beach to watch the sea turtles hatch and head into the ocean, but they stumble upon a beachside resort where the wealthy are using turtles in their spas as a fountain of youth.

Rigby's high school nemesis returns and threatens to ruin his chances at passing gym class and graduating high school.

Mordecai and Rigby have to defend their case on a planet inhabited by ear people.

Muscle Man wants to hide his bald spot at all costs.

The group tries to find different ways to keep the park open when Mr. Maellard announces his plans to shut down the park due to lack of attendance.

Benson gets a pet pig, and asks Rigby and Mordecai to look after it for him.

Muscle Man vows to prank someone.

Muscle Man gives the group a list of things that he wants to do before "the end." When everyone realizes he is serious, they decide to make Muscle Man's final wishes come true.

Mordecai, Rigby, Muscle Man, and High-Five Ghost are watching their favorite "Terrible-Horror" movie "Donut Factory Holiday". They have to get it back to the video store soon, but then they can't get it out of the VCR.

Benson is invited to a park managers' luncheon by Gene, but his employees worry that it might be a trap.

In order to get high school credits, Rigby has to pass a foreign language class taught by Benson in China.

The guys have to protect a large red button from being pushed.

In Regular Show's fifth installment of "Terror Tales," Benson tries to spice up the park's annual Halloween party by renting a wishmaking machine.

Rigby tries to get Eileen to go snow tubing.

Rigby must pass a safety test.

Mordecai and Rigby want to prove to Benson that they can be judges at the pie contest.

After the events of "1000th Chopper Flight Party", C.J. comes over to forgive Margaret for what happened then (and what happened on "Merry Christmas, Mordecai") and invites her on a double date with her and Mordecai. The trouble is, Margaret lied about havin a boyfriend so she could calm C.J. down from her rage and must keep up the masquerade with the help of Eileen and Rigby's outlandish story of how they met.

Mordecai and Rigby mess up their sleeping cycle because of watching a TV marathon and try to fix it.

When Muscleman gets dumped by his girlfriend Starla, he becomes too depressed to do anything, and his work is given to Mordecai and Rigby. They try to get the two back together when the work becomes too much.

Mordecai and Rigby take a job for receiving Mr. Maellard's package, which is very important.

The park crew helps Pops overcome his nightmares.

After Rigby invites Eileen for his big brothers karate presentation, Mordecai gets concerned and worried when hanging out with Margaret.

When Benson is dumped by his girlfriend Pam, he goes on a quest for French Fries to fill the void left in his Heart.

Pops wants to go on his favorite game show "Win That Prize," but instead gets deeply involved in the television industry.

Rigby has to create a massively crazy fake plan in order to surprise Eileen for the first time ever.

Muscle Man wants to be appreciated at the park so he threatens to leave and take a job as a gut model.

Benson try to win over a dome employee named Pam by sneaking her hot wings.

Mordecai and Rigby want to buy some cool hover boots, but don't have enough space creds for them.

Rigby tries to stop Mordecai from kissing a girl named Tracy on New Year's Eve.

Pops thinks he's mysteriously in medieval times and a wizard named Marvolo.

Mordecai and Rigby have to remember all of their food challenges so that they can eat a 10ft sandwich.

Thomas must save his brain after he chugs a slushy that freezes his brain.

The park employees want to give Benson a special mug.

Mordecai and Rigby are accidentally sent to Australia, so they have to look for a way to get to the airport, or else their boss Benson will have them fired for being late.

Mordecai and Rigby accidentally set loose a sinister brain.

The rest of the gang learn something about Pops.

Rigby wants to take Eileen to his school prom.

The guys try to get a girl's phone number in order to win a bet with Margaret and Eileen.

Mordecai buys a special cologne to get the attention of Margaret, but it ends up attracting partying unicorns instead.

The guys get new beds.

The guys hope to be VIPs at Cheeser's.

Muscle Man and HFG get struck by lightning after a football match and lose their memory of being friends together. Will they be able to remember?

Mordecai and Rigby unplug some cables to an old synthesizer, and they have to travel to the planet of Synthos with Skips in order to re-connect them and bring Gary back to life.

Rigby goes back to High School to study rocks, but wants to keep it a secret from Eileen.

The gang find the Alpha Dome, the first dome ever sent to space. Inside, they find a bunch of people who believe it is 1690.

Mordecai and Rigby have to rescue the golf cart from a bunch of rich people at a country club.

Mordecai, Rigby, Muscle Man, and Hi-Five Ghost try to get stuntman licenses so they can perform for Timmy's stuntman-themed birthday party.

Mordecai and Rigby enter a teleportation machine at the same time, causing unwanted effects that they hope to reverse before it's too late.

Mordecai and Rigby try to find the man who sprayed graffiti on the bathroom wall when they wrongfully accuse Muscle Man and get him fired.

The group helps Muscle Man and Starla on their wedding day. Still, it's Mordecai, whose relationship is in danger when Margaret gets invited, and an awkward speech leads to a final falling-out between Mordecai and CJ.

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.

Muscle Man wants to win a bodybuilding competition at his gym.

Benson is going to fire Mordecai if Rigby can't bring him back from a bizarre land of dudes also known as Dumptown USA.

The head scientist puts Mordecai and Rigby on a 24-hour lock down inside the Dome, but they want to sneak out and see one of their favorite bands.

Margaret really wants to host a weekly segment on the nightly local news.

Muscle Man wants a local radio station to play the song he wrote for Starla.

After Benson doesn't take home the award for Park Manager of the Year, the guys want to make him feel like a winner.

The guys celebrate their first Christmas in space by opening presents, eating peppermint bark and telling Christmas stories. Benson wants the stories to be more Christmasy but the guys keep adding scary elements, which infuriate their boss.