Voiced by: Roger Craig Smith
Debuted in: Season 4, "Exit 9B"
The newest addition to the park, a billy-goat intern.
- Affectionate Gesture to the Head: He is officially welcomed to the park staff with a group petting session.
- Anti-Villain: Even after his reveal as a foreign spy, Thomas admits that he still likes the friends he made.
- Ascended Extra: Actor example; Roger voiced dozens of minor and incidental characters prior to being added to the roster for good as Thomas.
- Because You Were Nice to Me: Downplayed. While he is aware of how the Park employees could treat him like a Butt-Monkey, he also realizes they were nicer to him than the Russian government. As such, Nikolai betrays the Russian government to help his friends and save the Park.
- Becoming the Mask: He considers the park staff his real friends, even though his work there was only his cover.
- Berserk Button: He doesn't like to be called a mama's boy. Muscle Man learned that the hard way.
- Beneath Notice: Why he poses as an intern.
- Blank Slate: Given he has no specific character role yet, for some fans he tends to fall somewhere between this and The Everyman. Until he's revealed as The Mole.
- Brick Joke: In the third Halloween special, the group have a story-telling contest where the loser has to wear their Halloween costume until Thanksgiving. He winds up losing and from that episode onward he's stuck in his pizza costume until the Thanksgiving special where he's finally allowed to take it off (and is in desperate need of a shower).
- The Bus Came Back:
- As a cameo, but he can be seen in disguise in the crowd during the reception in "Dumped at the Altar."
- Ultimaley, he returns in "Guys Night II" to spend time with his park friends for the final time.
- But Now I Must Go: After revealing he's a Russian spy, Benson offers him to stay at the park, but he declines since he'll be hunted down after betraying both the U.S and Russia and decides to go on the run.
- Butt-Monkey: Mainly in "Starter Pack" and "The Christmas Special".
- Chick Magnet: Surprisingly, in "New Year's Kiss", he is seen dancing with three girls at the same time. In "I Like You Hi", he mentions that he has at least four girlfriends.
- Cloudcuckoolander: Shows a tiny bit of this in "Journey to the Bottom of the Crash Pit". He works the camera/video booth at the park, but says he "knows a guy" at the climbing equipment booth. "The guy" is still Thomas with a ballcap on, having walked a couple feet to the other booth.
- In "Return of Mordecai and the Rigbys", when Mordecai and Rigby can't think of anything for Thomas to do, he decides to be their mean British manager because every band has one.
- In "I Like You Hi", when Mordecai asks for advice from a panel of his co-workers for his problem, Thomas just names off some of his girlfriends' music preference and tells him to try it. Mordecai wonders why he's even in this panel.
- Dark and Troubled Past: He was an abandoned child trained by the Russian government to be a ruthless spy.
- Defector from Commie Land: He defects when it's revealed to him that his mission is supposed to destroy the United States, in addition to killing or enslaving the park staff.
- The Dog Bites Back: In "Exit 9B", he gets fed up with how G.B.F. Jr. treats him so he threw iced coffee in his face before he is kicked off the freeway ramp. But then he is saved and he signs the document to save the park which foils G.B.F. Jr. plans.
- The Drag-Along: Not always eager to be involved in the Park Crew's craziness. Such as saving Muscle Man's trailer, or fighting a rival park crew for a coffee mug.
- Four-Temperament Ensemble: The Leukine - Pretty much The Generic Guy, until it's revealed that he is a spy.
- Funny Animal: He's a goat who wears clothes.
- Going Commando: Decides to do so to avoid getting wedgie'd by Muscle Man again.
- Green Rooming: After his two introduction episodes at the start of season four, he ended up not appearing in any episode in a meaningful role (besides the Christmas special) until much later in "Cool Cubed", although a good chunk of that time is spent frozen.
- HeelFace Turn: After being revealed to be a Russian spy, he turns against Natalia and in effect Russia after she tried to enslave, and then kill the park crew, his true and only friends.
- Initiation Ceremony: Mercilessly pranked as part of his hazing in the episode after he is introduced, by Muscle Man in particular. And even when he and Muscle Man prank Mordecai and Rigby, Muscle Man ends up destroying Thomas' car, which wasn't exactly part of the prank itself. Thomas gets screwed either way.
- The Intern: Thomas is interning at the park as part of his college course. Or that's what he wants you to believe.
- The Mole: He's an orphan raised by the KGB and sent to the park to study it.
- Naïve Newcomer: That's how it was with his debut episode.
- One Steve Limit: Subverted, as Thomas (the goat intern) shares the same name with Thomas (the son of Death), which was lampshaded once. Double subverted, as the former's real name is Nikolai.
- Only Sane Man: Only guy who routinely questions the bizarre antics the park crew get into.
- Put on a Bus: He leaves the park in "The Real Thomas" due to being a rogue secret agent who is now a fugitive of both America and Russia. It's unknown if Thomas can make any kind of return given his situation.
- Phrase Catcher: The rest of the park staff tend to angrily shout "Thomas!" whenever Thomas tries to get out of whatever crazy event they've gotten themselves into this week.
- Ridiculously Average Guy: At least where he is the main character.
- Sixth Ranger: Once he has joined the other people in the park. Actually a Sixth Ranger Traitor.
- Straight Man: To everyone that isn't Benson.
- The Power of Friendship: He defects from Russia thanks to the park staff, whom he now sees as his only friends.
- Took a Level in Badass: Who knew Thomas was strong enough to put Muscle Man in an arm bar in "Thomas Fights Back"? He also helps the group by pulling off a brilliant gambit as an undercover intern at the opposite park.
- Turns out these awesome abilities are thanks to the training he had to become a KGB agent.
- Walking Spoiler: The more said about him besides being an intern, the more of a spoiler he is.
- Wham Line: (In his native accent) "I am Russian spy."
- You Said You Would Let Them Go: He's genuinely shocked that Natalie tries to have the park crew killed after finishing their mission.
Voiced by: Janie Haddad
Debuted in: Season 1, "Caffeinated Concert Tickets"
A red-breasted robin who used to work at a coffee shop. Mordecai has a crush on her.
- Affectionate Nickname: "Hug bug" from her father.
- All Girls Want Bad Boys: The only time Margaret has shown to have an interest in Mordecai was when he "blew her off" (Mordecai at the time was suffering a Heroic BSoD from seeing Pops naked). Eventually inverted around Season 3.
- Amicable Exes: Zigzagged with Mordecai. When they broke up with her returning and him being with CJ, it is awkward, as Mordecai has complicated feelings over seeing her again while being in an official relationship. Things gets more messier after they share a kiss. And while they have no ill will for one another, Mordecai's awkward nature initially causes some problems, but they manage to work it out.
- Barefoot Cartoon Animal: In most episodes, though in some she does wear shoes.
- Bare Your Midriff: Has her moments. One example in "Meat Your Maker", in Mordecai's dream where she wears a seashell bra.
- Better as Friends: She and Mordecai eventually agree this in "Just Friends" and remain this way for the rest of the series.
- Betty and Veronica: The girlish, calm "Betty" to CJ's tomboyish, hot-headed "Veronica" for Mordecai's "Archie". At first, Mordecai is with Margaret but they break up because she got into her dream school and he eventually starts a relationship with CJ. Although, due to Mordecai mixed signals which included him kissing Margaret despite being in a relationship with CJ has led to her getting hurt over and over again. Finally, when he attempts to make a Love Confession to CJ or Margaret at Muscle Man and Starla's wedding, they both decide to break up. And in regards to Margaret, both amicably agree they are Better as Friends.
- Beware the Nice Ones: When she gets ticked off, she's surprisingly scary.
- Black Comedy: If her story in "Terror Tales of the Park II" is any indication, she's got a messed up sense of humor.
- Brainless Beauty: Had tendencies of this in early seasons, but has developed to be a little smarter and more reasonable. And she did get into college. So there's some modicum of smartness up there.
- The Bus Came Back: At the end of "Eileen Flat Screen".
- Characterization Marches On: Margaret was a Flat Character compared to the other recurring cast, that is until "Do Me a Solid" where she's revealed to be a down-to-earth character (the unusual circumstances don't faze her nearly as much as one would expect).
- Daddy's Girl: It's implied, since her password for her phone is the trope name.
- She also mentioned once that she used to play a lot of mini-golf with her dad.
- Made canon in Family BBQ.
- Damsel in Distress: In the Cartoon Network RS game, Fist Punch, where The Night Owl kidnaps her and Mordecai and Rigby has to save her.
- Distaff Counterpart: To Mordecai. They were quite clearly designed to complement each other.
- Dude Magnet:
- For over half the series, Mordecai has an intense, barely hidden crush on her.
- Prior to dating Mordecai, Margaret had three boyfriends.
- Possibly during one of his break-ups with Starla, Muscle Man was checking out Margaret when he saw her run by the park.
- The God of Basketball referred to her as a "hot chick".
- Feather Fingers: She's a bird with wings, and she uses her wing feathers for fingers after all.
- Fiery Redhead: Downplayed. Margaret is a red robin and can be short tempered, but most of the time, it's justified and she's usually mellow.
- First Love: To Mordecai before he moves on to C.J. But by the series finale, he has gotten with neither one, marrying a bat woman, named Stef.
- Funny Animal: She's a bird that wears clothes after all.
- Gender Equals Breed: Her mother is a robin, like herself and her father is a human.
- Graceful Ladies Like Purple: She occasionally wears purple dresses. She wore a short sleeved dress in "The Longest Weekend" when she went to the movies with her friends. In "Family BBQ" she wore fancy sleeveless dress, during the BBQ, when she introduced Mordecai to her folks. And another in "Steak Me Amadeus", she wore a strapless dress with matching high heels. She did however wore a casual purple skirt, with her shirt and pants, at the end of "Carter and Briggs" and in "Picking with Margaret".
- Human Mom Nonhuman Dad: Inverted. Her mother is a robin like her, but her father is a human.
- Interspecies Romance:
- Three of her boyfriends so far have been humans (one of which was apparently a giant), and she almost went on a date with Rigby in an alternate timeline.
- Averted with Mordecai, as they are both birds.
- I Want My Beloved to Be Happy : In "Merry Christmas Mordecai", and "Sad Sax", she accepted that Mordecai was seeing somebody else and wants to still be friends with him.
- Lethal Chef: In "Pie Contest", she made a pie that not only looked disgusting but it was burned and raw at the same time and it tasted like barf.
- Limited Wardrobe: Exceptions version. Outside of her job at the Coffee Shop, she and Eileen have a good set of wardrobes. She seems to prefer wearing yellow, blue, teal and occasionally purple.
- Ms. Fanservice: She tends to dress rather provocatively. In "Slam Dunk" we get a close up of her butt, seriously.
- My Girl Is a Slut: Played straight. Margaret is shown hooking up with a new person every day. Inverted in the second season: she's seen casually hanging out with Mordecai and Rigby.
- And then finally averted as of "Picking up Margaret".
- My God, What Have I Done?: In "Merry Christmas Mordecai", she accidentally kisses Mordecai when he's already with CJ, and she seem to have feel ashamed when CJ saw the scene.
- Nice Girl: She's really friendly most of the time.
- Nightmare Fetishist:
- In the second "Terror Tales From The Park" Halloween special, she thinks her story about a party bus that ages its riders into dust is 'funny', even though it wasn't.
- The reason she told it in the first place was because she thought it would cheer up a terrified Pops. Obviously It didn't work.
- Non-Mammal Mammaries: "Lady pecs", in Mordecai's words. She even gets to show a little sideboob in the concert episode, and cleavage in others.
- Official Couple: With Mordecai as of "Meteor Moves", but the relationship didn't last too long, once she got accepted into college and it's been declared dead in "1000th Chopper Flight Party" when she tells C.J. and Mordecai that she has a new boyfriend (which turns out to be false as seen in "Not Great Double Date"). By "Just Friends', both he and Margaret decide they work Better as Friends.
- Pink Girl, Blue Boy: Pink Girl to Mordecai's Blue Boy. Technically, she's bright red, but it looks pink due to color saturation from digital ink and paint.
- Pink Means Feminine: She doesn't wear pink much, but in "Pie Contest" she wore a pink apron and in Family BBQ, in her picture with her father, she wore a pink high school prom dress, and as a child, wore a pink-purple short sleeved dress, in the episode, she even had a pink-purple top with her dress. This may have been to represent her 'Daddy's girl' theme. She also has a pink sweater in "Laundry Woes"..but we never see her wore it.
- Put on a Bus: In the season 4 finale, after she was accepted in her dream college. Came back in season 6 which added some tension for Mordecai's relationship to C.J. Ultimately, despite some lingering interest with Mordecai, she doesn't pursue it. Her relevance is quickly dropped after that and the last seen of her is at the beginning of season 8 reporting on the Park Dome's ascension into space.
- Reality Ensues: Played for Drama concerning her relationship with Mordecai. Margaret eventually dumps when she decides to attend a University out of State. This seemingly comes out of left field, until the viewer takes into consideration that Mordecai at that point had no real ambitions out of life while Margaret was trying to jump start her career.
- Red Is Heroic: Margaret has red feather and is one of the nicest characters in the series. And whenever there's action involved, she's always on the side of good.
- Relationship Upgrade: Becomes a couple with Mordecai after sharing a kiss in "Meteor Moves", but break-up after Margaret gets into her dream school and decide to just be friends from the on.
- Satellite Love Interest: In the entire first season not much is known about Margaret, except she's nice and has a good set of lady pecs. Justified in that Mordecai himself can't seem to get past his shyness and learn more about her besides how attracted he is to her. (Note that he's always completely surprised about her boyfriends and entertainment preferences.) She's developed a bit more beyond the first season, however.
- Seashell Bra: During Mordecai's dream sequence in the episode "Meat Your Maker", he envisions Margaret wearing one that just ''barely'' covers her lady pecs.
- Shipper on Deck: She encourages Eileen's crush on Rigby.
- Skirt over Slacks: At the end of "Carter and Briggs" and in "Picking Up Margaret", she wore a purple skirt with a teal long sleeved shirt and blue pants.
- The Smurfette Principle: In the entire first season, she was in only four episodes (one of which was only via dream sequence) and had less than three minutes' screen time combined. However, she's gotten a lot more screen time in season 2.
- Strong Family Resemblance: When her mother is first shown, she looks exactly like Margaret with slightly more unsettled feathers and wrinkles.
- Toothy Bird: Like Mordecai, she has teeth in her beak.
- Town Girls: The giggly, somewhat demure Femme to CJ's aggressive, competitive Butch and Eileen's bookish, nerdy Neither.
- True Blue Femininity: A lot of jeans and pants she wears are blue. She even wore a blue skirt in "Ace Balthazar Lives". In "Eileen Flat Screen", she wore a blue News suit, though that was to do her job. In "Merry Christmas Mordecai", she wore a blue sweater with matching shoes.
- Tsundere: Her interest in Mordecai tends to fluctuate until mid-Season 4.
- Uncanny Family Resemblance: Her numerous aunts, uncles, cousins, and grandparents all bare a strong resemblance to Margaret.
- What Does She See in Him?: All of the men she seems to date are obnoxious jerks, who seem to irritate her. Except for Rigby in "It's Time", whom she really seemed to hit it off with.Margaret: Ugh, what boyfriend? I'm not seeing anyone right now. Guys are jerks.Mordecai: Gah, I know, right? Guys are the worst! (Flashes Rigby a silent "OOOOOOOOH!")
- This extends even to Mordecai, because even though he's a Nice Guy, he is also an admitted slacker who doesn't seem at all interested in improving his life and has stated that he doesn't see himself working anywhere except the park, where as Margaret at least has her priorities concerning her future in order.
Voiced by: Minty Lewis
Debuted in: Season 2, "Brain Eraser"
An adorably sweet mole girl who works at the coffee shop with Margaret. Has a crush on Rigby.
- Action Survivor: Proves herself to be one of these in "Camping Can Be Cool". Without her, Mordecai, Margaret and Rigby would probably not have made it out of those woods alive...
- Adorkable: Good lord is she ever.
- Ascended Extra: Went from Margaret's best friend to one of Mordecai and Rigby's closest companions before officially joining the main cast in the eighth season.
- Author Avatar: Eileen is basically Minty Lewis in mole form. Her biggest roles are generally in episodes Minty Lewis (who's a writer on the show) co-wrote with Kat Morris.
- Babies Ever After: She and Rigby have three children (2 daughters and 1 son) in the series finale.
- Badass Bookworm: She's a studious, academically overachieving Brainy Brunette who's also surprisingly strong and has saved (or helped to save) the day on several occasions.
- Berserk Button: In "Dumptown, USA," she has one regarding Ethiopian food she wants to try.
- Blind Without 'Em: After hearing that Rigby thinks she's hot without her glasses on, she tries to serve coffee without them and bumps into a table.
- Brainy Brunette: Including straight A's in school.
- Characterization Marches On: Her Cloudcuckoolander tendencies are played up far more in "Do Me a Solid" than they are in later episodes.
- "Do Me A Solid" proved this is indeed the case.
- And in "Camping Can Be Cool" she admits to going through a phase where she got lost in the woods a lot the previous year, as well as playing with several snakes.
- A Day in the Limelight: "One-Pull Up" marks her first important role in an episode, without her playing second fiddle to Margaret. She gets a lesser one in "Tants" her first major role following Margaret's departure. She gets her first full example of this in "Video 101".
- Does Not Like Shoes: Most of the time, Eileen is seen barefoot.
- Dude Magnet: Besides Rigby, three of his classmates in "The Eileen Plan" all agreed she was a "mega babe".
- Graceful Ladies Like Purple: She wore a purple sweater in "TGI Tuesdays", which she shows, she can be a graceful dancer. She also wore it in "Meteor Moves", "Play Date" and "Real Date". Though in "Tants", it looked more pink.
- Hair Decorations: She wears a light blue ponytail holder. She also wore a mistletoe in her hair, in "Merry Christmas Mordecai".
- Happily Married: In the finale A shot shows she's married Rigby and they have several kids together.
- Heterosexual Life-Partners: With Margaret and to a lesser extent with CJ. Becomes a plot point in "I See Turtles" when Eileen bemoans the fact she can't hang out with both at the same time due to the lingering awkwardness over Mordecai and Margaret's kiss at the Christmas Party. Tenuously resolved with CJ calling Margaret to save Eileen, Rigby and some baby turtles, with the two agreeing to hang out though still clearly not being comfortable around one another.
- Hidden Depths: Proves to be an adept trainer in "One Pull Up".
- Interspecies Romance: She (a mole) and Rigby (a raccoon).
- Jerkass Ball: In "Dumptown, USA," when she turns her fake break-up with Rigby into a real one, when it was initially to get Rigby to Dumptown to rescue Mordecai, all because she started to think negatively of Rigby and continues to carry this grudge towards him off-screen up to the end of the episode, all because of Rigby not wanting to go to the Ethiopian restaurant with her. They reconcile off-screen before the next episode, though.
- Limited Wardrobe: Exceptions version. Outside of her job at the Coffee Shop, she and Margaret have a good set of wardrobes. She seems to like pink and blue the the most.
- Meganekko: An anthropomorphic one.
- Morality Pet: Eileen is more or less the one person Rigby won't be a Jerkass towards.
- Nerd: Unapologetically so complete with Nerd Glasses. In "Meteor Moves", she mentions being a member of an astronomy club.
- Nerds Are Sexy: She's an archetypal Nerd whom Rigby thinks is hot, and apparently he isn't the only one; she's referred to as a "mega babe" by some high school jocks in "The Eileen Plan".
- Nice Girl: Rivals Pops for the position of the nicest character on the show.
- Official Couple: In the episode "Dumped at the Altar" Rigby reveals that he and Eileen have been dating in secret for a couple months. According to Rigby, it was her idea since she wanted to avoid "shoving their happiness down Mordecai's throat."
- Older Than They Look: Her very short stature and childlike side ponytail suggest that she's younger than she is, but she's the same age as Mordecai and Rigby.
- One-Book Author: This is (currently) the only voice acting role for Minty Lewis, whose only other contribution to the show has been storyboarding a few episodes in Season 2.
- Pink Means Feminine: Like how Margaret seems to like wearing yellow and teal tops, Eileen seems to like wearing a lot of pink tops. In "Terror Tales of the Park III", she wore a pink skirt, to go along with her 50s outfit costume. She also wears a pink dress to Muscle Man and Starla's wedding.
- Satellite Character: Suffered from the same affliction as High Five Ghost, serving mostly as a side dish that came along with Margaret until the fifth season had her hanging out with Mordecai and Rigby proper more often. Eventually elevated to main character status in the eight season, as a result of joining the Space Park Rangers along with the others.
- She Cleans Up Nicely: In "Access Denied". She wore a black dress, and did her hair.
- Sherlock Scan: In "Crazy Fake Plan", she does this to try and figure out where Rigby is taking her, complete with computer screen vision.
- Shipper on Deck: She's very supportive of Mordecai and CJ's relationship, so much so that she and Rigby encourage them to go on a real date and she helps CJ out on said date.
- Skintone Sclerae:
- In later episodes Eileen seems to go through a redesign. She loses this and her ponytail is done up on the other side.
- She still has this trope with her glasses off.
- Smart People Wear Glasses: And it goes along with her being a Brainy Brunette.
- Stalker with a Crush: Eileen to Rigby. First noted in "Do Me A Solid", when Mordecai notices that Eileen is staring at Rigby from the other side of the Coffee Shop.
- Subverted in "Diary", Margaret forgot to tell Mordecai and Rigby that she asked Eileen to water her plants since she had the guest room for the weekend. The night before Margaret revealed this, Rigby confessed that his biggest secret was that he thinks Eileen is hot without her glasses on. Guess who comes to serve their coffee without her glasses?
- This was subverted in the fact that Eileen heard Rigby say this while she was (unknowingly to Rigby) in the guest room.
- Subverted in "Diary", Margaret forgot to tell Mordecai and Rigby that she asked Eileen to water her plants since she had the guest room for the weekend. The night before Margaret revealed this, Rigby confessed that his biggest secret was that he thinks Eileen is hot without her glasses on. Guess who comes to serve their coffee without her glasses?
- Stronger Than They Look: She's petite and usually very meek, but she reveals in "One Pull Up" that she was on the pep squad at her high school and can do pull-ups with ease. She also puts Rigby through some serious training to also be able to do a pull-up.
- Town Girls: The bookish, nerdy Neither to CJ's aggressive, competitive Butch and Margaret's giggly, somewhat demure Femme.
- True Blue Femininity: A lot of bottom wear she wears, are blue. She did wore a blue sleeveless top in "One Pull Up" and briefly in "Real Date". And also a short sleeve shirt in "Lift With Your Back".
- What Does She See in Him?: With the way Rigby acts towards her, you'd think she'd try someone else...
- This is subverted in later episodes, with Rigby treating her nicely and even showing hints of being attracted to her. They eventually become an Official Couple, with Rigby actively working to better himself for her (and himself).
- Zettai Ryouiki: In "Bald Spot", she wore white stockings that were either B Over-Knee or A Thigh-High.
Voiced by: Linda Cardellini
Debuted in: Season 3, "Yes Dude Yes"
A cloud girl who Mordecai goes on a blind date with after thinking Margaret was engaged and befriends as a result.
- Action Girl:
- In "Dodge This". Despite her team being rookies, they make it all the way to the finals of the dodgeball tournament and end up winning the whole thing. She even beats Mordecai, the park's best player, one on one after they work things out.
- She even saved him and Rigby, with Eileen's help, in "Portable Toilet".
- Amicable Exes: Averted with Mordecai. While they ended their relationship on amicable terms, even hugging one another, CJ is (understandably) a little frosty to Mordecai and Word of God confirmed they no longer speak with each other post-breakup.
- Ascended Extra: Started out as a one shot character, later returns as a recurring cast member...only to come full circle and be Demoted to Extra.
- Big Damn Kiss:
- With Mordecai in "New Years Kiss", albeit unknowingly as she couldn't tell it was him until they dropped their disguises.
- Done again at the end of "Real Date", except this time, they're a couple.
- Betty and Veronica: The tomboyish, hot-headed "Veronica" to Margaret's girlish, calm "Betty" for Mordecai's "Archie". At first, Mordecai is with Margaret but they break up because she got into her dream school and he eventually starts a relationship with CJ. Although, due to Mordecai mixed signals which included him kissing Margaret despite being in a relationship with CJ has led to her getting hurt over and over again. Finally, when he attempts to make a Love Confession to CJ or Margaret at Muscle Man and Starla's wedding, they both decide to break up. And in regards to Margaret, both amicably agree they are Better as Friends.
- Beware the Nice Ones: Went berserk when Mordecai chose Margaret over her but only because she thought Mordecai and her were dating.
- Biker Babe: She revealed that she has a motorcycle license and she did motocross when she was younger.
- Birds of a Feather: With Mordecai. They both like rock bands, playing video games, goofing off, etc.
- Bizarre Alien Biology: She can turn into a living storm.
- Boots of Toughness: She's tough, spunky, competitive, and she wears black boots with her regular attire.
- Character Development: Subtle, but CJ does get a better hold of her temper. In "Yes Dude Yes", she becomes completely furious at Mordecai for perceiving him accidentally asking out Margaret as a sign of him playing with her feelings. She does it again in "The 1000th Chopper Party", but is ashamed of how she almost killed Margaret's parents as a result of thinking Mordecai and Margaret were together. And when she learns that Margaret does still have feelings for Mordecai, she gets angry and stays so, but she manages to calm herself down enough to avoid doing any damage.
- A Day in the Limelight: She gets her own episode in "Daddy Issues".
- Demoted to Extra: After she breaks up with the Mordecai the show pretty much forgets about her save for a cameo here and there.
- Embarrassing Last Name: Subverted in "Daddy Issues" when she revealed that her father is Carl Putter, a mini-golf champion. Rigby asked if her last name is "Putter" but she tells him that's her father's mini-golf name.
- Fatal Flaw: CJ has two:
- Jealousy. Her problems with Margaret come from the fact that she honestly doesn't trust her around Mordecai and thinks that he still has feelings for her. She is pretty bad at keeping a clear head when she sees the two of them together and ultimately leads to her nearly getting them killed because of a genuinely innocent incident.
- Hair-Trigger Temper. CJ has a really bad habit of allowing her temper to get the best of her and jumping to conclusions instead of thinking things out rationally. Coupled with her aforementioned jealousy issues, this leads to a danger combo. In her final major appearance in the series, she preemptively breaks things off with Mordecai because she assumed that he would choose Margaret over her.
- Gamer Chick: Just like Mordecai, she's pretty good at playing video games. She even managed to make the top high score three times on the same arcade game.
- Goth: In "Real Date", there's a picture of her in her Couple Corral profile (a dating site) when she was going through a Goth phase.
- Heterosexual Life-Partners: Takes Margaret's place as Eileen's until Margaret returns to town.
- High-Pressure Emotion: Because she's a cloud, when she gets angry or upset she turns grey.
- Hulking Out: She turns into a giant stormy cloud (shaped like an actual cloud rather than her human-like shape) and causes an actual storm when she's upset at Mordecai.
- Insecure Love Interest: A large part of the reason why her and Mordecai have relationship troubles is that despite Mordecai constantly trying to prove his dedication to her she is afraid that he still has feelings for Margaret and when seeing the two together she tends to jump to conclusions. Comes to a head in "1000th Chopper Flight Party" when she sees the two of them together because of circumstances she wasn't aware of. She instantly flies off the handle and goes storm cloud on them, nearly killing Margaret's parents.
- Interspecies Romance: She (a cloud humanoid) and Mordecai (a blue jay).
- Irrational Hatred: By late Season 6 and early Season 7, she starts to develop this of Margaret, due to her jealousy of her and Mordecai, to a point when she caught a glimpse of Margaret on television in "Local News Legend," she quickly changes the channel out of spite.
- Just Friends: In "Dodge This", Mordecai and CJ both agreed to start over as friends. "Portable Toilet" makes it rather obvious they have feelings for each other. Eventually blown to all hell in "I Like You Hi".
- Limited Wardrobe: While Margaret and Eileen have their own set of wardrobes, CJ always wear a stripe sleeveless shirt, brown shorts and black boots. She dose wear other outfits, but they were for occasions or when they were convenient for the plot. In "Sad Sax", due to winter, she did wear a blue jacket...with shorts. And later in the episode, she did wear warm pants and different shoes...with her sleeveless stripe shirt.
- Love Hurts: Mordecai honestly hurts her by choosing Margaret over her.
- Love Interest: CJ becomes Mordecai's second love interest after his break up with Margaret.
- Manic Pixie Dream Girl: Downplayed. She brings Mordecai out of a funk after he thinks Margaret is engaged, but doesn't really change him in any way. Played straight in "I Like You Hi", she both helps him move on from Margaret for good and gets him out of his habit of never making a move.
- My God, What Have I Done?: When she attacks Margaret's father's chopper, thinking Mordecai has betrayed her again, she nearly kills Margaret's parents and doesn't realize it until Margaret tells C.J. that she's not getting back together with Mordecai because she already has a boyfriend and they really are Just Friends. The episode ends with C.J. crying and running off over her destructive antics.
- Nice Girl: When she first meets Mordecai, she understands that he's not interested in dating at the moment so she hangs out with him to cheer him up. Reinforced when it turns out she was avoiding Mordecai not because she was mad at him for kissing her but because she thought HE was mad at her for running out on him.
- Also in "Sad Sax", when she was angry with Mordecai about the whole kissing Margaret thing, she didn't take it out on Eileen and Rigby, and still hang out with them.
- Not So Above It All: While normally a Nice Girl she is typically very frosty towards Margaret because of the kiss she shared with Mordecai. While she has forgiven Mordecai for this she seems to see it as evidence that she can't trust Margaret to be around him and as such doesn't want to be around her.
- Obliquely Obfuscated Occupation: We don't know exactly what her job is. In "I Like You Hi", she said that she can watch TV at her job and nothing more came of it. In the Season 7 finale, she is seen working as a tour guide for children, but it's unknown if that's her actual job or if she was just volunteering.
- Only Known by Initials: Her name is actually Cloudy Jay. Or Cloudy Jane . . .
- Paper-Thin Disguise: Apparently neither Mordecai nor Rigby could tell it was her at the New Year's party despite just having simple mask over her eyes. Then again neither could she since Mordecai was wearing the same thing.
- Pink Means Feminine: She's tomboyish, but in "Real Date", she did choose to wear a pink sweater to go with her dress. In "Daddy Issues", she wore a pink sleeve shirt with her overalls when she was younger and she also wore a pink skirt for the mini golf. These three examples go with Tomboy with a Girly Streak.
- Put on a Bus: Introduced in Season 3 but seems to disappear without a trace, generally believed that she was just a one shot character. That is until Season 5. But then she makes her swan song in "Dumped at the Altar" (excluding her cameo in Season 7). By Season 8, CJ is all, but forgotten.
- Red Eyes, Take Warning: Her eyes start growing red when she transforms into a storm in "Real Date".
- Relationship Upgrade: Agrees to go out with Mordecai in "I Like You Hi". But their relationship officially ends in "Dumped at the Altar.
- Romantic False Lead: To Margaret, though to the show's credit, while it was obvious that Margaret really hadn't gotten engaged, she was set up. Subverted now that Margaret's gone.
- Second Love: To Mordecai.
- Shapeshifting Excludes Clothing: When she goes storm cloud she leaves her clothes on the ground and goes back into them when she calms down.
- She Cleans Up Nicely: In "Real Date", she wore a red dress with matching flats and a pink sweater.
- Single Woman Seeks Good Man: She considers Mordecai a nice guy and gets upset with him when she believes he's acting like a jerk.
- Tomboyish Name: Her name is Cloudy Jay (or Cloudy Jane), but she goes by CJ.
- Tomboyish Ponytail: She has a fluffy cloud ponytail.
- Took a Level in Jerkass: In "Dumped at the Altar," just after Mordecai makes a speech and is about to express his feelings towards CJ, CJ does not give Mordecai a chance and dumps him on the spot, expecting the worse that he could be talking about Margaret. In addition, she starts to develop an Irrational Hatred of Margaret. This is justified as she felt her heart getting broken.
- Town Girls: The aggressive, competitive Butch to Margaret's giggly, somewhat demure Femme and Eileen's bookish, nerdy Neither.
- Violently Protective Girlfriend: In "Real Date", the C.E.O. of Couple Corral learned too late why you should never hurt Mordecai.
- Walking Spoiler: Her relationship with Mordecai, since it directly spoils Margaret's exit.
- "Well Done, Daughter!" Girl: CJ never got any respect from her dad, especially when it's involving mini-golf. The two of them make peace after CJ finally beats him.
- What Happened to the Mouse?: Last seen in "Rigby's Graduation Special" coming to the park to celebrate Rigby's graduation and looking on horrified when the Park Dome blasts off into space with the park crew (and Eileen) in it. She never makes an appearance after that. Even in the finale the dome returns back to Earth and many of the crew's families come to greet them. The most we get is a painting that Mordecai makes of her in the ending montage. According to Word of God, CJ went on to become a professional dodgeball player and doesn't keep in contact with Mordecai, Rigby, Eileen, or Margaret.
- Who Wears Short Shorts?: CJ wears brown shorts.
- You Wouldn't Like Me When I'm Angry: Get her miffed enough and she'll turned into a real storm cloud that can reek some serious havoc.
Voiced by: Courtenay Taylor
Debuted in: Season 2, "Muscle Woman"
Muscle Man's former on again-off again (currently on) girlfriend and later wife.
- Acrofatic: Much like her husband, she's surprisingly quick and agile despite being fat.
- Affectionate Nickname: "Babe" from Muscle Man.
- Amazing Technicolor Population: Green skin like Muscle Man.
- Ambiguously Human: Like Muscle Man, Starla looks relatively human except for the natural green skin.
- Babies Ever After: While Muscle Man is in space, she gets pregnant and gives birth to their daughter, who he finally meets after he returns. By the series finale, she and him have had more children.
- Battle Couple: Whenever she and Muscle Man are in a brawl, they make an effective fighting team.
- Big Eater: Though not on the same scale as her husband, Starla does love to eat.
- Clingy Jealous Girl: Gets jealous of the assumption that Muscle Man is flexing his pecks to attract women.
- Distaff Counterpart: Starla is basically the female version of Muscle Man.
- Gainaxing: And it's not pleasant to watch.
- Gonk: She is just as unattractive as Muscle Man. Although, she gets a prettier.
- Happily Married: To Muscle Man as of the end of Season 6. She later has his child while he's off in space, Mitch finally meeting her when they return and the Epilogue shows they have several more.
- Lookalike Lovers: She and Muscle Man look almost exactly alike despite not being blood related.
- Morality Pet: She is the one that Muscle Man is the least jerkass towards. In fact, he is consistently kind and loving whenever he is near her.
- Not Good with Rejection: And by "Not good", we mean she goes on a town destroying rampage when Mordecai dumps her.
- Official Couple: With Muscle Man, and the two are engaged and married by the season 6 finale.
- Person of Mass Destruction: You think Muscle Man tears stuff up when he's mad? She outdoes even him.
- Progressively Prettier: In her first appearance, she's ill-mannered and quite ugly. As she made more appearances, it was toned down◊ and now she's much cuter.◊
- She Cleans Up Nicely: She's still no looker, but cleans up nice during "Fancy Restaurant".
- Stout Strength: The same as her boyfriend/husband — Starla is fat but has a lot of strength.
- Strong Family Resemblance: When her parents make their debut episode, it's shown that Starla gets her looks from her father.
- Super Strength: She's not known as "Muscle Woman" for nothing.
- Token Minority Couple: Coincidence or not, she and her parents are the only stout, green-skinned people around besides Muscle Man and his relatives.
- Violently Protective Girlfriend: Starla will beat up anyone who threatens to harm Muscle Man.
- Woman Scorned: When she gets dumped, the results are not pretty.
- Your Makeup Is Running: After seeing Muscle Man "dead" in "The End of Muscle Man", she has an emotional breakdown that leaves her with long streams of black running down her face.
Voiced by: David Ogden Stiers
Debuted in: Season 2, "Dizzy"
The owner of the park and the father of Pops.
- Accidental Misnaming: He keeps getting Benson's name wrong by calling him Beancan, Bert, Beanbag, Ball Bucket, Beanton, Bean Teen, and Beanson. By the end of "Benson Be Gone", he finally gets Benson's name correct, which sticks for future apperances.
- Ambiguously Evil: He's shown developing very suspicious plans for the Park throughout the seventh season that ultimately send the whole thing into space. In the Finale Season, we discover he was Good All Along: he was preparing them to save the universe from Anti-Pops.
- Conspicuous Consumption: When he makes a mess of his limousine's upholstery he just buys a whole new limousine rather than have it cleaned.
- Cool Car: He is driven around in a white limousine called "The White Stallion" that's equipped with machine guns, tire spikes, mini missiles, wheel spikes, grapple guns, lasers, and a massive missile.
- Distinguished Gentleman's Pipe: Seen with one on occasion
- Hypocrite: He hates paying for damages that happens in the park caused by Mordecai and Rigby, but when he damages or ruins his own stuff he doesn't care because he's rich and he can always replace it.
- Jerkass: He treats everyone who isn't Pops like crap. Even when he does something good in sending the crew into space to fight Anti-Pops, he tells none of them ahead of time.
- Jerkass Has a Point: In "Lunch Club" he cuts off Benson blaming Rigby for a screwup to put some of the responsibility on Benson himself, as he sees Rigby's incompetence as a result of Benson's methods. He's right on the points that A) Benson's methods are not effective at getting the workers to do their jobs right (his constant yelling and Mordecai and Rigby just makes the two dismissive past a certain point), and B) Benson forced Rigby into working heavy machinery while he was sleepy (Rigby's own fault in this case but Benson did have some warning about it ahead of time).
- Jerk with a Heart of Gold: He does care for his son, Pops, even if he isn't too fond of the other staff.
- Like Father, Like Son: He may be a grump but he's just as scatterbrained as his son and this was before he revealed he adopted Pops.
- Lonely at the Top: Mentions this in one episode when he thinks that his birthday was forgotten.
- Killed Offscreen: He dies in between the crew's return to Earth and the 25 year reunion in the last scene.
- Mean Boss: He is way meaner than Benson. And any problems that occur in the park, thanks to Mordecai and Rigby, he takes his frustration out on Benson.
- Miniature Senior Citizens: He may be a short, elderly man but he's still taller than Rigby.
- Outliving One's Offspring: Mr. Maellard dies many years after his adopted son Pops sacrificed himself to save the universe. In the show's epilogue he's shown quietly grieving during the celebration of the park staff's return.
- Perpetual Frowner: In most apperances, though he can crack a smile.
- Pet the Dog:
- In his debut, he would mispronounce Benson's name and barely thanks him. But when Benson help saves the park in "Benson Be Gone", he thanks Benson properly and finally gets his name correct.
- A minor one from "Dizzy," when he congratulates Pops on giving a speech.
- His tape he made for Pops in "The Ice Tape" He explains he raised Pops as his own after finding him in a crater, trying to raise him normally and, when it was clear Pops couldn't escape his destiny to battle Anti-Pops ,did everything he could to prepare Pops for it by sending him into space, with the park crew along to help him.
- Rockers Smash Guitars: He owns a guitar, autographed by a famous rock star, just for this purpose. Mordecai, Rigby, and Benson were left speechless after going through all that trouble to replace the guitar Benson accidentally broke.
- "Shaggy Dog" Story: It's pretty much a waste of time trying to replace or fix something owned by him because he'll ruin it, accidentally or purposely, and not care about it because he's rich.
- So Proud of You: In a video tape to Pops explaining Pop's origins, he tells him that's he's always been proud of what he's become. Considering this is the last time Pops will hear from him, that's saying something.
- Visual Pun: He's a sour lollipop.
Voiced by: Julian Dean
Debuted in: Season 1, "Don"
Rigby's younger brother who's also an accountant.
- The Ace: Tall, uber nice, drives a wicked car and loved by all.
- Always Someone Better: To Rigby, which is the reason why Rigby resents him.
- Animals Not to Scale: He's huge.
- Annoying Younger Sibling: While he isn't doing it on purpose to Rigby, Rigby resents his brother because everyone likes him more and he's more successful.
- Big Brother Worship: He admires his brother and tries to be like him. Like not wearing clothes like Rigby.
- Big Little Brother: Due to his size and voice, people would mistake him as the older brother. One of the reasons why Rigby was always so upset with him.Rigby: And to top it all off, everyone always thinks you're my older brother. I'M the older brother! Me!
- Break the Cutie: Don's hurt reaction to Rigby saying he wishes Don was never born. They make up and he recovers quickly however.
- Catchphrase: "Give me some sugar."
- Cool Car: He drives a red Chevrolet Corvette C4.
- Cuddle Bug: He loves giving people "sugar".
- Foolish Sibling, Responsible Sibling: The responsible sibling (an accountant who owns his home) to Rigby's foolish sibling (a slacker who never graduated high school). Although, Rigby does get better by season 7.
- Gentle Giant: Being the opposite of Rigby, he's very big and very nice.
- Man Hug: He would give this to everyone and calls his hugs "sugar".
- Naked on Arrival: Also applies to Mordecai and Rigby, of course, but it's more conspicuous with Don because of his ripped humanoid shape. He says he stopped wearing clothes because he admired Rigby for doing it.
- Nice Guy: Which makes the others confused about Rigby's hate towards him.
- Strong Family Resemblance: Despite having the same head and facial design as Rigby, the thing that makes him look different is his body.
Voiced by: J.G. Quintel, William Salyers, Sam Marin, & Mark Hamill
Debuted in: Season 2, "A Bunch of Baby Ducks"
A bunch of baby ducks that Mordecai and Rigby found in the park fountain. They imprinted on Rigby and started following him around and copied his actions. They are able to fuse together and transform into a giant human with a duck's head.
- All Your Powers Combined: When they transform into a giant.
- Armored Villains, Unarmored Heroes: In the first part of the fight, but it's subverted when they gain a Powered Armor.
- Attack of the 50-Foot Whatever: When they fuse together.
- Badass Adorable: Adorable duckies who can turn into a building sized kicker of ass.
- Big Damn Heroes:
- In "A Bunch of Baby Ducks", when the Duck Collector is about to attack Rigby, the ducks morph together to become a giant and kills him.
- In "A Bunch of Full Grown Geese", just before the geese were about to drop a tree on Mordecai and Rigby, the ducks arrives and fires a laser at the tree.
- Continuity Cavalcade: Their power armor is full of this. See Powered Armor.
- Fearless Infant: They don't flinch when Rigby tries to scare them away.
- They also don't think twice about picking a fight with a snake. And proceed to beat it into submission.
- Finishing Move: Their combined form seems to use a flaming karate chop as this.
- Fusion Dance: Can combine into a giant.
- Imprinting: They imprint on Rigby, which leads to them picking up his habits.
- Instant Expert: The baby ducks are able to pick up on what Rigby does.
- Jerk with a Heart of Gold: Even though they refer Mordecai and Rigby as losers, they are still friendly and respectful to them.
- No Name Given: The name of each duck is never given.One of the Baby Ducks: Yo, other baby ducks, Mordecai's coming!
- Not Allowed to Grow Up: Ever since their debut, they haven't aged at all. While they can talk and do certain activities, like playing video games and skateboarding, they're still referred to as babies.
- Papa Wolf: They really don't like it when someone hurts their mom or their friends.
- Powered Armor: Mordicai and Rigby manage to give their combined form a suit of this later on, which they pilot like a giant mecha.
- Bag of Holding: Wears the Energizer Pack (fanny pack) from "But I Have a Receipt".
- Cool Helmet: They wear the "I'm Eggcellent" trucker cap from "Eggcellent" that turns into a helmet with horns that resembles Rigby's tail.
- Heroes Prefer Swords: Uses the Immunity Sword from "But I Have a Receipt".
- In a Single Bound/Nice Shoes: They wear basketball shoes that resembles the shoes from "Cool Bike" that helps them jump really high.
- Instrument of Murder: They are equipped with "The Power" keyboard from "The Power".
- Power Fist: Uses the PlayCo Armboy from "Over the Top" on their left arm and the Maximum Glove from "Video Game Wizards" on their right.
- Power Source: Their armor is powered by RadiCola from "Party Pete".
- Rocket Punch: They use the Maximum Glove from "Video Game Wizards" as this.
- Who Wears Short Shorts?: Wears cut-off jeans from "Death Punchies".
- Red Eyes, Take Warning: When they transform into a giant or when they are giants.
- Sibling Team: They're all related.
- Suddenly Voiced: By the end of "A Bunch of Baby Ducks", they first start talking when they fuse to become a giant and we hear one of them talk when they thank Mordecai and Rigby. In "A Bunch of Full Grown Geese", all of them starts talking.
John "Muscle Bro" Sorenstein
Voiced by: Steve Blum
Debuted in: Season 2, "My Mom"
A truck driver, and Muscle Man's older brother.
- Escaped from Hell: How he's introduced in "My Mom!". By driving his truck straight out of the underworld.
- Jerkass: He's his brother minus the parts that make him tolerable. He does, however, come off with good terms with everyone else in later episodes.
"Muscle Dad" Sorenstein
Voiced by: Fred Tatasciore
Debuted in: Season 3, "Trucker Hall of Fame"
Muscle Man's father.
- All of the Other Reindeer: He was a forklift operator who longed to be a trucker, with the Truckers looking down on him and picking on him.
- Big Damn Heroes: Saves his son, Fives, Mordecai and Rigby from an army of Jerkass truckers from beyond the grave.
- Big Fun: Loved pulling pranks and spending time with his kids.
- Fat Idiot: Died due to his on stupidity. See Too Dumb to Live below.
- Good Parents: Just an all around good dude.
- Like Father, Like Son: HE's where Mitch gets his love for pranking, his catchphrase, and his bodybuilding talent.
- Manchild: A sweet guy, but he spent most of his time pulling the same dumb sort of pranks his son does on people at a far older age than him.
- Nice Guy: Outside of pranks, he's the kindest man and only wanted the best for his son.
- The Prankster: He was the predecessor of his son.
- The Tape Knew You Would Say That: His various videos and letters left to Muscle Man border on prophetic.
- Too Dumb to Live: He was nice and all, but this is how he died...Muscle Man: We're here today 'cause my dad put a cactus under a cop in a bear costume, who turned out to be an actual bear.
Voiced by: Roger Craig Smith
Debuted in: Season 2, "See You There"
The older brother of Hi-Five Ghost who gives low-fives and he's also a police officer.
- Cool Big Bro: He's always willing to lend HFG a helping hand when asked.
- Cool Shades: He wears two types of sunglasses. He wears black Aviator sunglasses when he's cop and turquoise wayfarers sunglasses when he's off-duty.
- Dirty Cop: He's not afraid to bend the rules to help his brother and his friends.
- HeelFace Turn: Zigzagged. He was in jail in his first appearance, but later became a cop after being bailed out. But, even after becoming a cop, he bends the rules to help his brother and his friends.
- Light Is Good: Zigzagged. Like his brother, he's a white ghost. However, he was a former criminal but became a cop...but is also a Dirty Cop. Other than that, LFG is a genuinely decent fellow.
- Meaningful Name: Opposite of his younger brother, he gives low fives.
- Never Bareheaded: We always see him with his sunglasses on.
- Nice Hat: His police hat.
- Perma-Stubble: LFG has some stubble. This may be mostly done to tell him and HFG apart.
- Sibling Yin-Yang: With Hi-Five Ghost. LFG talks more often and is outgoing while HFG is quiet and shy.
- Strong Family Resemblance:
- He pretty much looks like Hi-Five Ghost if you take away the sunglasses and stubble.
- And like his brother, he bares an equally strong resemblance to their father.
Voice by: Sam Marin
Debuted in: Season 1, "Death Punchies"
The Death Kwon Do Instructor, Sensai, is an overweight martial arts instructor who teaches the fighting style of Death Kwon Do and is now a deli owner
- Big "NO!": He lets it out three times in "Death Punchies", when Mordecai and Rigby steals from his Death Kwon Do book and when someone Death Kwon Clogged the toilet.
- Clothes Make the Superman: His mullet, his cut-off jeans, and being shirtless is only way to do Death Kwon Do.
- '80s Hair: His mullet.
- Lethal Chef: Ironically the food he makes (Sandwich of death) is what attracts customers.
- A Pupil of Mine, Until He Turned to Evil: While he isn't evil, he stole the recipe for the Death Sandwich and mass-produced it without his master's consent.
- Spell My Name with an "S": Even though the real word is "Sensei," in the credits, his name is written as "Sensai".
- Turn the Other Cheek: He forgives Mordecai and Rigby for ruining his Death Kwon Do business and even helps them when Benson eats the Death Sandwich incorrectly.
- Verbal Tic: He would say "...of death" a lot in "Death Punchies".
- Walking Shirtless Scene: All Death Kwon Do practitioners do not require a shirt.
- Who Wears Short Shorts?: A pair of jeans with the long leg sleeve cut out.
Voiced by: Courtenay Taylor
Debuted in: Season 3, "Weekend at Benson's"
Benson's next-door neighbor and girlfriend.
- 555: Her phone number starts with this.
- Amicable Exes: Kinda. While she did invite her ex-boyfriend to her party, her ex tries to prevent anyone from dating her.
- Innocently Insensitive: In "The Christmas Special", when Benson shows off his christmas sweater to her, she comments on Benson's sweater saying it should be the winner for "Ugliest Sweater", thinking he's only wearing the sweater as a joke.
- Interspecies Romance: With Benson who's a gumball machine.
- Official Couple: With Benson as "Party Re-Pete" indicates. Subverted in "The Real Thomas" where Benson revealed that they both broke up.
- Romantic Spoonfeeding: Does this with Benson at the end of "Party Re-Pete" while they dance.
Voiced by: Jeff Bennett
Debuted in: Season 2, "Party Pete"
A party entertainer that Mordecai and Rigby hired to help liven up their party.
- Balloon Belly: After drinking several Radicolas which gave him strange powers. After finding out Benson was going to return to the park to see what all the commotion was about, the gang had to keep giving Party Pete Radicolas so he'll burn out in order to get rid of him before Benson showed up, thus ending Mordecai and Rigby's party with a bang.
- Expendable Clone: It turns out the Party Pete that we saw in his debut is actually a clone who would explode when the party is over.
Both voiced by: Roger Craig Smith
Debuted in: Season 3, "Replaced"
A possum and ostrich that Benson offers positions to when he plans to replace Mordecai and Rigby.
- Butt-Monkey: They both get antagonized by Mordecai and Rigby when they try and clean the boats.
- Foil: To Mordecai and Rigby. While Mordecai and Rigby are a pair of two that work at the park. The two are slackers who go commando, frequently fight and have basic education at best. Chad and Jeremy are fully clothed, take their work seriously, received degrees from The Institute of Technical Technology and appear to always agree with each other.
- Hero Antagonist: They're technically the antagonists as Mordecai and Rigby are trying to get them both to not finish their jobs, while Chad and Jeremy are trying to finish their work. However, Mordecai and Rigby are in the wrong for purposely messing up their site so that they'll keep their jobs.
- Hipster: Their snobby cynical attitudes, clothing, and use of Apple products fit this culture.
- Screw This, I'm Outta Here!: After all the antics when they're offered the positions, they decide that the park is too crazy for them to work at.
- Those Two Guys: Both of them are never seen apart from each other.
Voiced by: Kurtwood Smith
Debuted in: Season 3, "Prankless"
A snack vending machine who's the park manager of East Pines park.
- Animate Inanimate Object: He's a walking, talking, snack vending machine.
- Big "NO!": Says this when Muscle Man floods his park with a gigantic water balloon.
- Deadly Prank: He took innocent pranks and turned it into warfare.
- Defeat Means Friendship: After "Prankless", he helps the gang in "The Christmas Special".
- Even Evil Has Loved Ones: He has a wife and kid who are also vending machines.
- Even Evil Has Standards: Loves to mercilessly prank the members of the park, but not when the fate of Christmas is at stake.
- Evil Laugh: When he's antagonizing the park crew.
- Greater-Scope Villain: The things he leaves in his office in "Chili Cook-Off" reveals that he was behind many of the show's prior events.
- Large and in Charge: Justified since he's a large vending machine.
- Nice Hat: He wears a green park ranger hat.
- The Rival: His park is the rival to the other park.
- Token Non-Human: He's the only non-human working at the East Pine park.
- Vengeful Vending Machine: But in a different kind of way.
Voiced by: Matt Price
Debuted in: Season 4, "Quips"
A yeti who is Skips' cousin who constantly tells terrible jokes and gets on the nerves of everybody.
- Alliterative Name: Quintin Quippenger. Also applies with his nickname.
- Bigfoot, Sasquatch and Yeti: Like his cousin, Quips is a yeti.
- Character Tics: Whenever he uses his Verbal Tic, he does a pelvic thrust while fist pumping his arms forward.
- Comically Missing the Point: He is fully unaware that everybody hates his jokes and thinks the only reason why people don't laugh is because they don't get his jokes. This is the reason why he got fired from the comedy club. He finally figures it out once Skips finally tells him the truth.
- Creator Cameo: His voice actor is one of the writers of the series.
- Don't Explain the Joke: He explains a lot of jokes if the person/people he's telling them to don't laugh (but that's because they aren't funny).
- To Don. Both are family members of one of the Park's employees who contributed to an episode's plot and are both nice guys. Don was liked by all of the Park members except from his older brother, Rigby, who tried to drive Don away; Quips is considered the In-Universe scrappy by all of the Park members except from his cousin, Skips, who is the only one who wants Quips around.
- To Skips. Both are friendly, albino yetis with similar sounding names and their main romance was with a human. Skips has a muscular body, serious, lost the love of his life, and is well-liked by the other Park employees; Quips has a slimmer build, loves to make jokes, is happily engaged, and is barely tolerated by his cousin's friends.
- Friendless Background: Despite having a fiancée, he has absolutely no friends for obvious reasons. He made Skips his best man for his upcoming wedding and has a bachelor party with just Skips, Mordecai, Rigby, Muscle Man, and Hi-Five Ghost because of this particular reason.Quips: (asking a request from Skips) At the end of the night, I want to eat wings on a hill with my best buds! Well, your best buds. Can I borrow your best buds? Just to reiterate, I don't have any friends.
- Heroic Albino: Like his cousin, Quips is an albino yeti but still a nice, if annoying, guy.
- Incredibly Lame Pun: He does almost nothing but make awful puns and jokes.
- Interspecies Romance: Quips is a yeti and his fiancée is a human.
- Keet: He's almost always upbeat.
- Laughing at Your Own Jokes: He constantly tells bad jokes that only he finds funny.
- Meaningful Name: He thought people called him "Quips" because his last name is Quippenger, but it's actually because he constantly tells really bad jokes.
- Nice Guy: Annoying nature aside, Quips is genuinely sweet-natured.
- The Scrappy: In-universe and out. His constant bad jokes and not shutting up about them is why everybody hates him. Even Pops, who can tolerate most people and is a bit of an oddity himself, doesn't want to be associated with him. Although this was most likely deliberate. He appears to have dropped this as of his second appearance on the show.
- Too Dumb to Fool: When Skips and Quips are trapped inside a mirror box, Reginald, one of the Guardians of Eternal Youth, tries to make Quips understand how unfunny he is by making reflections of Quips appear inside the box telling his bad jokes. It doesn't work because he finds the jokes hilarious.
- Too Dumb to Live: He constantly makes fun of Reginald and doesn't take the game they are playing seriously which angers Reginald into trapping him and Skips inside a mirror box. He thinks he can get them out by telling Reginald more jokes which makes the situation they are in even worse.
- Uncanny Family Resemblance: His resemblance to Skips is amazing, with the only difference being in hairstyle and body type.
- Verbal Tic: "Zingo!"
Voiced by: Roger Craig Smith
Debuted in: Season 4, "Family BBQ"
The Channel Six traffic reporter, and Margaret's human father.
- Character Development: Initially a hostile Jerkass to Mordecai for dating Mordecai but comes to genuinely like him near the end of "Family BBQ". And Frank's subsequent appearances, which were after Mordecai and Margaret broke up, Frank is more friendly to the former, even saying how Mordecai is a like a son to him.
- Interspecies Romance: His wife is a robin and he's a human.
- The Last of These Is Not Like the Others: The majority of Margaret's family are birds, mostly red colored robins with the exception of her cousin John who's orange. Frank however one ups John as he's a human.
- Overprotective Dad: Franks acts cold and dismissive towards Mordecai for most of "Family BBQ" because he's afraid that he will take away his "Hug Bug".
- Serious Business: He takes cannonballsnote ridiculously serious.
- Shipper on Deck: By the ends of his debut episode, he comes to fully support Mordecai as Margaret's boyfriend.
Debuted in: Season 5, "The Postcard"
A human girl Hi-Five Ghost met four years ago before she went off to study in Prague, Czech Republic.
- Ascended Extra: Appears in three eps in the show (Her introduction, a Halloween story and the finale). She plays major a role in the Adventure Time x Regular Show comic crossover.
- Babies Ever After: She and Hi-Five Ghost have a son together by the series finale.
- Birds of a Feather: With Hi-Five Ghost. They love the same coffee shop, down-tempo electronica, the same music album, watching animals in the aquarium, and they don't like the food in Wing Kingdom. But unfortunately, none of them had cellphones back then.
- Boy Meets Girl: That's how they both meet.
- Catchphrase: "Me too!"
- Does Not Like Spam: Like HFG, she doesn't like chicken wings. Unlike him, she apparently doesn't pretend to like them.
- Happily Married: Reunites with Hi-Five Ghost at the series finale and beyond making music with him, appears to have settled down with him and even had a son with him.
- Interspecies Romance: She (a human) and Hi-Five Ghost (a ghost).
- Multicolored Hair: The top part of her hair is turquoise while the rest is brown.
- The Promise: She and Hi-Five Ghost both agreed to meet up again when she finishes her schooling and if they're both single by sending him a postcard to let him know she's back in the country.
- Same Clothes, Different Year: Four years later when she reunites with Hi-Five Ghost, she is wearing the same clothes and has the same hairstyle from the day they first met.
- Satellite Love Interest: Celia's only characterization is that she's Hi-Five Ghost's main love interest and girlfriend, whom she has a Birds of a Feather relationship with.
- True Blue Femininity: In "Merry Christmas Mordecai", she wore a Blue sweater with Angels. She also wore a dark blue skirt.
- You Gotta Have Blue Hair: Dyed naturally. She loses it as seen in the series finale.
Voiced By Grey DeLisle
Debuted in Season 3, Episode 33
Skip's deceased love and girlfriend.
- Early Installment Character-Design Difference: In her debut episode, "Diary, this is what she looked like.
- Fingerless Gloves: She wore black fingerless lace gloves.
- Flower in Her Hair: During the night of prom, she wore a flower in her hair.
- Heroic Sacrifice: Mona pushes Skips out of the way of falling debris from Klorbane's attack and is instantly killed.
- Interspecies Romance: Her (a human) and Skips (a yeti).
- The Lost Lenore: For Skips. She was killed when she pushed him out of the way of falling rubble caused by Klorgbane's attack on the prom. Even into the finale of the series, he never tries to find love again.
- Nice Girl: She was a very sweet person.
- Nice Hat: She wore a hat filled with flowers.
- Single Woman Seeks Good Man: Mona instantly liked Skips because of their connection, but she didn't want to be with him due to his willingness to get into fights.
- Strong Family Resemblance: When her parents are shown, she and her mother look almost exactly alike.
Voiced By Ali Hillis
Debuted in Season 7, Episode 5
One of the dome scientests, who Benson develops a crush on and later a relationship with.
- Back for the Finale: She came back and worked with Benson after Mordecai and Rigby left.
- Birds of a Feather: With Benson, as both of them are workaholics and love chicken wings.
- Brainy Brunette: Pam has brown hair and is one of the dome scientists.
- Does Not Like Spam: She is not a big fan of Ranch dressing.
- Early-Bird Cameo: Appears in the inital "Dome Experiment Special" and a few other episodes before her feature appearance in "Pam I Am".
- Easily Forgiven: Despite knowing the true nature of the Dome, and despite dating Benson once the experiment was over knowing he'd be launched into space, Benson forgives her and continues their relationship till she dumps him. Benson also brushes off their breakup for her sake, despite falling to pieces once their call is finished.
- Happily Married: She and Benson rekindled their relationship and later got married after he came back.
- Interspecies Romance: Her (a human) and Benson (a sentient gumball machine).
- Meganekko: She's a fairly attractive woman who wear big, circle-shaped glasses.
- Put on a Bus: Is left on earth with the rest of the supporting cast and later breaks up with Benson due to the distance between them.
- Smart People Wear Glasses: She's is a meganekko scientist.
Voiced by Kate Micucci
Debuted in Season 8, Episode 9
A floating rock who runs "Roxy's Famous Fries", a fry food truck that visits the Space Tree.
- The Cameo: Is mentioned briefly in "Spacey McSpace Tree" and Rigby being banned from her truck is the catalyst for him trying to find a way around his punishment.Rigby: Her butt salt is delicious!
- Human Resources: Uses salt from her own butt in the fries. Surprisingly, it's quite delicious.
- A Lizard Named "Liz": She's a sentient floating rock named Roxy.
- Manic Pixie Dream Girl: Deconstructed, as while she gets Benson out of his funk, he rejects her due to still dealing with Pam dumping him.
- Nice Girl: Is more than willing to let Benson tag along on her suply run after realizing just how depressed he is and tries her best to cheer him up. She's also understanding when Benson lets her down due to still getting over Pam.
- Rock Monster: Is a floating rock.
- Supreme Chef: Her fries are the best in the Galaxy and she backs it up. Justified as she uses only the best ingredients and only focuses on the one dish.
- Ship Tease: With Benson. While he lets her down, he lets her know he's flattered and only does so because he's still getting over Pam and flirts with her at the end of the episode.
- Tertiary Sexual Characteristics: Has a pink bow to physically show she's a girl.
Voiced By: Feodor Chin
Debuted in: Season 8, Ep 21
A old teacher the crew meet in space sent to train Pops for his confrontation with Anti-Pops.
- Back from the Dead: Revived in the final episode.
- Heroic Sacrifice: After Pops' attempts to talk down Anti-Pops fail, he holds off Anti-Pops while the Park Crew get Pops to safety, getting erased in the process.
- I Was Quite a Looker: Looked much more fit back in the day.
- Old Master: Designed as such and no slouch in the combat department.
- Really 700 Years Old: Has lived through countless death and re-births of the universe due to the Pops and Anti-Pops' battle. He hopes the current iteration will be able to break their stalemate.
- When You Snatch the Pebble: Part of his training to Pops involved this like any classic kung fu master. He challenges Rigby to attempt this when Mordicai and he call him out as a fraud. Needless to say, he quickly proves he's the real deal.
Voiced by: N/A
Debuted in: Season 8, "A Regular Epic Final Battle"
An artist and Mordecai's future wife.
- All There in the Manual: Her name was revealed from the creators on an AMA reddit page.
- Babies Ever After: Had two sons and one daughter with Mordecai.
- Clingy Jealous Girl: Slightly in the "25 Years Later" comic, but justified as Mordecai and she are married and seeing him aged down back to his 20s (Long story) and hanging with a likewise de-aged Margret didn't help matters. Mordecai assures her however any feelings for Margret are long by the wayside and he would never betray her.
- Happily Married: With Mordecai, given how they're seen in the 25 years park reunion, Mordecai finally found the one.
- Interspecies Romance: Her (a bat) and Mordecai (a blue jay).
- Locked Out of the Loop: In "25 Years Later" comic, she feels this way since she had met Mordecai long past his 20s. So she wasn't used to the craziness that happened in his youth. Likewise didn't help that Margaret was visiting at the time.
- Love at First Sight: Implied. While at an art convention, she bumps into her future husband, Mordecai, another fellow artist. The two gaze at one another before a Time Skip happens — showing that they are married with three kids.
- Perky Goth: Implied by her attire, at least back when she first met Mordecai.
- Reality Ensues: Her character and marriage to Mordecai is an example of this in a more meta sense. Most pieces of fiction revolving around teens and young adults have the final romances between established characters, but in reality, many meet their future spouses not until well into adulthood. Some fans were disappointed that Mordecai's wife was someone that had no relevance to the series up until the last second, while others found it an interesting twist.
- Satellite Love Interest: Outside of the fact she is a fellow artist and Mordecai's future wife, not much is know about her. Whether we will see more about her in the future is up for debate.
- Third-Option Love Interest: Mordecai's two primary love interests (Margaret and CJ) didn't work and he met and fell in love with Stef later on.
- The Voiceless: Doesn't utter a single line in her only appearance.
Space Tree Station
Voiced by: D.C. Douglas
Debuted in: Season 8, Episode 3
The Commander of Space Tree Station, where the Park Crew ends up after being blasted into space.
- Ambiguously Evil: Keeps the true purpose of the SPARK initiative from the crew and dodges Benson's questions when confronted. Subverted as of "Space Escape": He only doesn't explain why Pops is important because there isn't time, and does everything in his power to protect the park crew. It's also made clear whatever the Park's mysterious mission is, it's a good one.
- Big Good: Of In Space For the first third anyway.
- Drill Sergeant Nasty: A mild example, as he only puts on the persona to try and get Benson not to quit, and the worst he does most of the time is tell his crew to drop and give him 20.
- A Father to His Men: Willing to lay down his lives for his men in a heartbeat. Also see Reasonable Authority Figure Bellow.
- Heroic Sacrifice: Twice! First he stalls long enough for the Park Crew to escape, though they use the opprotunity to help save the rest of the Space Tree instead, and then he holds the door for them and stays behind to keep it up.
- Jerkass Has a Point: While he screwed up trying to push Benson using a Drill Sergeant Nasty persona, he points out that their combat training does have a purpose, as not every alien they encounter will be friendly, as proven by their encounter with the Reaperbots.
- Nice Job Breaking It, Hero!: Nearly causes Benson to leave trying to do reverse psychology.
- Reasonable Authority Figure: Behind his gruff demeanor is a truly caring captain who at worst gives out pushups or a just punishment for endangering other crew members, and in the latter case offers an alternative when asked.
Voiced by: Matthew Mercer
Debuted in: Season 8, Episode 2
A bumbling Space Tree Ranger.
- Back from the Dead: Revived after Anti-Pops' death.
- Butt-Monkey: His friends don't like him and Missing Wallet ends with him still trapped after it's revealed his wallet had no money in it.
- Clone Army: Has an army of clones.
- Crouching Moron, Hidden Badass: Despite his lack of skill with a gun, he's still a decent fighter and is crucial in the fight with the Reaperbots And later saves the Dome from imminent destruction. Though this turned out to be a clone.
- Heroic Sacrifice: Shoots himself into space suitless to save the Park Dome and allow them to escape. Though it's later revealed to be a clone of his.
- Imperial Stormtrooper Marksmanship Academy: Utterly awful at aiming.
- Ironic Name: Despite his full name, he has terrible aim.
- No Celebrities Were Harmed: Physically resembles Mal Reynolds.
Voiced by: Vanessa Marshall
Debuted in: Season 8, Episode 2
Another Space Tree Ranger who constantly has a toothpick in her mouth.
- Action Girl: By far the strongest of the Space Ranger trio.
- Back from the Dead: Revived after Anti-Pops' death.
Voiced by: Matthew Mercer
Debuted in: Season 8, Episode 2
The final member of the Space Tree Ranger trio. A robot who provides helpful information.
- Back from the Dead: Revived after Anti-Pops' death.
- Beware the Nice Ones: Kind, helpful... and just as badass as his friends.