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.

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

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.

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

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

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.

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

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.

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

The guys help Pops train.

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.

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

After lying about having an awesome band, Mordecai and Rigby must get help from their future selves in order to learn how to play in time for the battle of the bands.

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

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.

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.

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

Mordecai tries to shake hands with Margaret's father.

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 wants to ask Margaret to be his girlfriend.

Mordecai plans to kiss Margaret at a meteor shower.

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.

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

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

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.

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

After the incident between Pops and Anti-Pops, the gang search out to find the Seer.

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

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

The bros go on a second adventure before Thomas goes into hiding as an agent.

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

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

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.

Mordecai and Rigby are charged with bringing Benson tortillas.

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

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.

Mordecai and Rigby discover Margaret'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.

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

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

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

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

Mordecai offers Margaret a ride to the airport.

The park is miraculously sent into space.

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

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

Mordecai, Rigby, Muscle Man, Hi-Five Ghost, and their boss Benson set out to stop an impending war coming from a new format, DVD.

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.

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.

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

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

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 look for help when their awesome house party turns lame.

Benson tries to get back Mordecai and Rigby's stick hockey table when he wrongfully gives it away.

Mordecai and Rigby try and prank the Master Prank Caller to be the best prank callers, but he sends them back to 1982.

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

Mordecai and Rigby get distracted while setting up chairs for a kid's birthday party and unleash a monster that terrorizes the entire park.

Margaret returns to town for Eileen's Christmas party, which complicates things for Mordecai now that he is with C.J. -- and things get worse when Mordecai breaks C.J.'s heart.

Skips has to lower his stress for health reasons.

The park guys plan revenge on Muscle Man for giving them prank gifts every year during their White Elephant Gift Exchange.

The guys must escape a bad guy.

Mordecai and Rigby accidentally ruin Thanksgiving and have to fix it before their families arrive for dinner.

When the park's bowling team, "The Park Strikers" make it to the championship match in a bowling tournament, Death, the lead member of the rival championship team threatens to reveal Skips' secret if he does not back out.

Mordecai ponders over his feelings towards C.J. after he sends an auto-corrected text message to her saying that he likes her.

Rigby learns an ultimate karate move and becomes the bully of the park.

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.

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

Mordecai and Rigby lie about being astronauts in order to cut in line at a restaurant.

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.

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.

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

Skips intervenes to stop his cousin's bad jokes.

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

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

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.

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

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

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

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 need to retrieve a wallet on a hostile planet.

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

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

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

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

In order to impress Margret and ask her out, Mordecai hangs with a bunch of punk Unicorns who say they can help him get his lady.

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.

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

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

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 want to go to a reunion concert.

Rigby must pass a safety test.

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

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.

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

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

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.

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

Mordecai and Rigby want to help Party Horse get back together with his girlfriend.

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

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

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.

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

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

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

Muscle Man vows to prank someone.

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

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

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

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

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

Mordecai and Rigby accidentally set loose a sinister brain.

Rigby tries to get Eileen to go snow tubing.

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.

The guys get new beds.

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.

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

The guys hope to be VIPs at Cheeser's.

Mordecai and Rigby make a bet with Muscleman and High-Five Ghost to see who can get the most views on their internet videos in one week.

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

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

Mordecai and Rigby want to stop Muscle Man from screwing with Thomas.

Mordecai and Rigby have to return an overdue VHS to the store so they won't be banned from renting new movies.

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.

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

With his high school reunion arriving, Rigby tries to accomplish skydiving while eating a burrito, a task he claimed he would do before attending the reunion.

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

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

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.

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.

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

The guys enter a donut contest in hopes of winning a cameo on their favorite cop show.

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

Rigby ruins Maellard's fancy lunch, and now he or Benson has to write a letter of resignation.

The park crew helps Pops overcome his nightmares.

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.

Hi-Five Ghost hopes to reunite with a lady from his past after receiving a long-awaited postcard from her.

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

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.

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

The park employees want to give Benson a special mug.