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The titular Badass Crew of penguins.
- Anti-Hero: Except for Private, all of them are mostly Type II.
- Badass Adorable: They are small, cute penguins and complete badasses.
- Badass Crew: Of course.
- Everything Is Better With Penguins: Likely the main reason why this show was made.
- Four-Man Band:
- Only Sane Man: Skipper ( he isn't really SANE, but he is the closest thing the group has )
- The Smart Guy: Kowalski, of the Mad Scientist.
- The Pervert: Rico ( of the Heroic Comedic Sociopath type )
- Butt Monkey: When it comes to being a diversion, or bait, Private tends to get the short end of the stick.
- Four-Temperament Ensemble: Skipper ( choleric/melancholic ), Kowalski ( melancholic/phlegmatic ), Private ( phlegmatic/sanguine ) and Rico ( sanguine/choleric ).
- Jerk with a Heart of Gold: Except for Private, who is a straight up Nice Guy, these guys probably aren't the nicest animals in the Zoo and are prone to making selfish mistakes, but they are dedicated to helping animals in need and stopping evil animals and they care about each other deeply.
- Ragtag Bunch of Misfits: Thanks to the Flanderization, Skipper is now an extremely paranoid leader with some prejudice against mammals, Kowalski is a nerdy Insufferable Genius, Rico is a psychopatic Dumb Muscle who loves explosions and while Private may be the most normal of them, he is still prone to making silly and naive mistakes and is a Cloud Cuckoo Lander.
- True Companions: They stick together no matter what.
- Undying Loyalty: While they have their arguments from time to time, these guys are constantly loyal to each other.
The leader of a Badass Crew of Commando Penguins, voiced by DreamWorks animator/TV series co-creator Tom McGrath. He speaks in a crisp, hard-edged tone like a cool spy from a film noir movie. In the TV series, Skipper is somewhat abrasive with the other three penguins, often chastizing them and Dope Slapping them to keep them in line.
- A Father to His Men: Genuinely seems to look out for and care about his men, and has even pulled off a one manned Big Damn Heroes more than once. And more than once when he was personally at a physical disadvantage. He can be soft to the other three penguins, often awarding their hardwork and showing fear and worry when he knows they're in danger. He becomes especially upset when he believes one of them to be dead.
- Afraid of Needles: In "Needle Point," he goes well out of his way to avoid getting a shot.
- Badass Adorable: In "Rock-A-Bye Birdie".
- Badass in Charge: The tough leader of a Badass Crew of penguins.
- Berserk Button:
- The Captain: He is the heroic commander of the penguins. His name, "Skipper", is a synonym for "sea captain".
- Deadpan Snarker: Skipper has a snarky sense of humor.
- Dope Slap: Used often on his comrades. Sometimes all three in one swing. He also likes to order one of his men to do this when he is too far away or can't be bothered to do it himself.
- Drill Sergeant Nasty: Has shades of this in "A Kipper for Skipper". He subjects his comrades to all sorts of difficult and impossible tasks.
- Fantastic Racism: He occasionally makes less-than-complimentary remarks towards mammals. He especially dislikes humans.
- Despite this he genuinely respects Marlene, and has openly said that she's smart, despite claiming that mammals have low intelligence.
- Flanderization: While the most unchanged of the penguins, his opinion of the main characters in the movies (referring to them as hippies) has been expanded to a low opinion of all mammals in general.
- Four-Temperament Ensemble: The Choleric.
- Freeze-Frame Bonus: In "Skipper Makes Perfect" when Skipper steals his file back from the Danes you can freeze on the file and learn some of what happened (most of which has been brought up at some point or other by Skipper already).
- Good Is Not Nice: They are openly heroic and have good intentions... even if they are usually needlessly ruthless and have little concern for collateral damage.
- The Hero: Occasionally, he and the others do come off as jerks, but they almost always save the day in the end.
- It's All My Fault: Done twice. The first time was when he poked a hole in Julien's bouncy house causing him to lose his crown (though he blamed part of it on Marlene for provoking him); the other, when one of the chimps causes him and the penguins to spin out and lose a race to the lemurs. In the latter episode, also he accepts full responsibility despite the fact he did nothing to cause it. He even said they would have his resignation in the morning because of his shame and guilt.
- Large Ham: Lots of dramatic closeups and exaggerated gestures accompany his powerful paranoia and give the impression that Skipper has trained at the William Shatner school of acting. His tendency to clutch a flipper to his chest when upset gives one the permanent suspicion that he's suffering from some sort of heart condition.
- The Leader: He leads and commands the penguin team.
- Loves My Alter Ego: He fell for Arlene (Marlene in disguise due to chlorine accident) and became kinda Stalker with a Crush.
- Meaningful Name: Skipper is also the title of the captain of a ship or team.
- Never My Fault: The one time it was his fault, he pinned the blame on Private.
- The Nicknamer: He almost always refers to Julien as "Ringtail," Mort as "Sad Eyes" and Max as "moon cat."
- Odd Friendship:
- With Marlene. They are certainly friends and honestly respect and trust one another. Even though Marlene's friendly and level-headed nature clashes with Skipper's raving paranoia.
- With King Julien. The two were described as best friends by Dr. Blowhole and Skipper's fellow penguins end up more or less agreeing.
- Officer and a Gentleman: Mostly Officer.
- Persona Non Grata: As stated above, he can't set foot in Denmark due to Hans the Puffin making him Public Enemy Number One.
- Properly Paranoid: Sometimes. Other times, he wears the paranoia cap too long. His tendency to overreact to situations new to him gets subverted in its own right: in one of the specials the show had, he and the other penguins get stuck in Hoboken's Zoo, which has all of their former villains reformed. Skipper's thoughts about this? He comes up with a plot about them being taken over by robot clones. He was right.
- Smart People Play Chess: He's shown playing chess with Marlene in "Crown Fools".
- The Un-Smile: Skipper has at least once mentioned that it hurts to smile.
The team genius and gadgeteer, voiced by Jeff Bennett. Kowalski builds all of the crazy technology that the other penguins use, and a lot of the tech that causes a lot of trouble for them too. He helps to come up with plans - usually ones that are overly complicated - and is occasionally referred to as 'Lieutenant'.
- Adorkable: Especially when he's excited about science.
- Ambiguously Jewish: Kowalski is a very common surname among Jewish immigrants, especially those originating from Poland. Kowalski himself manages to hit a few Jewish stereotypes, including his knack for over-analysis and lyrical exaltation setting him close to his compatriots from Eastern Europe. Oh, and the shape of his head looks a little bit like a Kippah.
- Arbitrary Skepticism: Refuses to believe in anything supernatural despite having witnessed things that science just can't cover, though to be fair encounters with things of genuine supernatural origin are rare for the Penguins and such things are either mundane in origin or are ambiguous enough in nature that Kowalski can refute them because evidence to the contrary can't be found. However he is surprisingly knowledgeable of anything concerning cursed and possessed objects.Kowalski: I took an online course!
- Badass Baritone: Kowalski has a deep voice most of the time and is the Penguins' resident Badass Bookworm.
- Bamboo Technology: Kowalski reguarly builds amazing things out of elastic bands, coffee cups, lollipop sticks and duct tape.
- Berserk Button: Skipper learned the hard way what that was in the ep Goodnight and Good Chuck.
- Bi the Way: He dated a female dolphin once, but in "Pet Peeved" he shouts out "I love you" to Skipper when he is taken away.
- Bungling Inventor: His invention do have an AWFUL tendency to backfire, with Skipper showing skepticism of them working.
- Butt Monkey: Often receives the brunt of Amusing Injuries, Sanity Slippage and just being a Bungling Inventor.
- Cannot Tell a Joke:Private: There's two of you! That's a great trick!
Kowalski: Private, can you recall a time when I have ever played a trick or even told a joke?
- He has attempted to tell jokes since that episode... but they tend to fall flat.
- Captain Obvious: "Kowalski, report/analysis!" Followed by Kowalski making a blatantly obvious statement.
- Catch Phrase: Egads!
- The Chew Toy: His massive ego always makes sure he has it coming to him every time.
- Deadpan Snarker: He has his moments of this.
- Ditzy Genius: Many of his inventions and plans are...questionable.
- Flanderization: In the movies he is serious, logical and calculating, playing the Straight Man to Skipper. Here the serious part is removed and the other attributes are exaggerated to Mad Scientist levels.
- For Science!: He tends to do experiments that put his teammates in danger out of scientific curiosity.
- Four-Temperament Ensemble: The Melancholic.
- Gadgeteer Genius: The team's primary source of Homemade Inventions.
- Hidden Depths: He can play banjo and sing really well. Also, despite his apparent social awkwardness and love issues ( see Doris ), "Mental Hen" shows that he kind of knows what works on females.
- Homemade Inventions: His specialty.
- I Have No Idea What I'm Doing: Practically his Catch Phrase. Apart from, "For SCIENCE!"
- Insufferable Genius: Kowalski is incredibly arrogant about how intelligent he is, bordering on narcissism.
- Interspecies Romance: He has a girlfriend named Doris who is actually a real dolphin.
- The Lancer: He is Skipper's Number Two, contrasting him both in appearance (Kowalski's tall and skinny, Skipper's short and stocky) and personality (Kowalski prefers to think, Skipper prefers to act).
- Large Ham: Not particularly to Skipper's degree, but he's keeping up.
- Love Hurts: his one-sided love of Doris the dolphin.Julien: Ooh, the dolphin-lady who broke him? Yes, he does go on and on about her.
- MacGyvering: He can create awesome gadgets from the garbage he finds in the zoo.
- Mad Scientist: He may not be the Evil version, but there's no doubt that Kowalski holds all qualifications for being as crazy a scientist as you'll get.Skipper: Kowalski, have you ever invented anything that doesn't eventually threaten to destroy us all?
Kowalski: Let me think. Uhhhhh... No.
- Magic Versus Science: Is extremely skeptical of anything with a 'supernatural' bent. Can, however, be convinced of its veracity if the problem persists long enough.
- Meaningful Name: A 'Kowalski' is a nickname given to somebody who works in the background dependably, but never gets any glory or basks in the limelight, which was definitely applicable to Kowalski in the first movie. It's also a gender neutral first name.
- Nerds Are Sexy: He's not shy on fans. You can blame his VA for that.
- Never Learned to Read: His inability to read serves as a Running Gag.
- Nice Job Breaking It, Hero!: The things he does For Science! usually result in this, such as his Kick the Dog moment in "Friend-in-a-Box" (taking the circuit board from Mort's video game) that earns him a What the Hell, Hero? from the others.
- Number Two: With the rank of Lieutenant, when Skipper goes AWOL, Kowalski does his best to take charge.
- Papa Wolf: To Jiggles. He swears vengeance against the kiddies after thinking they ate Jiggles.
- Phrase Catcher: In early episodes, Skipper would often say "Kowalski, options." or "Kowalski, report." to him. This catch phrase has cropped up again halfway through season 2.
- Puppy-Dog Eyes: Sports a particularly huge pair in the animatic for "It's About Time".
- Red Oni, Blue Oni: The blue to Rico's red.
- Sanity Slippage: Is prone to this in most of his Butt Monkey instances.
- Screams Like a Little Girl: For somebody who's voiced by Jeff Bennett, Kowalski sure does have a high-pitched shriek, and we hear it on a pretty regular basis too.
- Techno Babble: Is very fond of giving his inventions techno babble sounding names, to the point of taking offence when the other penguins suggest very straightforward alternatives.
- The Smart Guy: He is the brain of the team.
- Sniff Sniff Nom: His usual method of handling evidence, including chameleon footprints and a strand of King Julien's fur.
- Stalker with a Crush: Kicks off the events of "Loathe at First Sight" by attempting to divine Doris's location through studying dolphin migatory habits while planning to use his Love-U-Lator on her.
- Vocal Evolution: Has a very subdued and deadpan delivery in the pilot and early episodes, emulating Chris Miller's delivery in the movies, but both the voice and the character become more quirky as time goes on.
The team demolitions expert and Hammerspace of the team, voiced by John DiMaggio. Usually, he speaks in short grunts, but his speech has become a lot more coherent in later episodes of the series. Rico's pretty much the quartermaster, armory, and storage of the team, capable of regurgitating pretty much anything the penguins need. To distinguish him from the similar Skipper, in the series Rico has a mohawk and a scar over his beak, possibly caused by hacking up too much stuff.
- Allergic to Love: In one episode, it's stated that he has "mushy love sensitivity."
- Ascended Extra: In the original films he was the least developed penguin character. Here, he got a more recognizable character design (a tuft of feathers on his head and a scar over his face), an Ax-Crazy Dumb Muscle personality, and his Stomach of Holding gag is turned Up to Eleven.
- Ax-Crazy: Rico really loves Stuff Blowing Up and anything else that's destructive. Taken to the extreme in "Kaboom and Kabust"; the other three penguins have to constantly keep him under control (which is why they almost never let Rico explode things,) otherwise Rico loses it completely and destroys everything he can find.
- Berserk Button: His berserk buttons are messing with his dolly or hurting his friends, especially Skipper.
- The Big Guy: He's a bit sturdier than the other three.
- Chainsaw Good: As Private said in one episode, "Oh, Rico! Chainsaw's Your Answer to Everything!"
- Cloudcuckoolander: The episode "Friend In A Box" has Kowalski make a mind-reading device. When the other two penguins are disgusted with Kowalski (and he with himself), Rico thinks only "Fiiiiiiiiiiiiiish". When the other two penguins are proud of him, Rico still thinks, "Fiiiiiiiiiiiiiiish".
- Combination Attack: Is a component of the most common move in the Penguins arsenal, which is for another Penguin to carry him around and fire him like a gun.
- Dumb Muscle: There are many examples of Rico not being too bright...
- Extreme Omnivore: He eats things that he keeps in his Stomach of Holding. This includes explosive chemicals, and actual characters.
- Fat Bastard: The Token Evil Teammate of the Penguins and he has a large gut. Due to his status as Dumb Muscle, also counts as Fat Idiot.
- Fat Idiot: A chubby penguin who is not smart at all.
- Flanderization: In the movies, Rico started by choking up paperclips and matches, in number 2 he produces a switchblade from nowhere, but by the Penguins movie he was capable of eating Dave the Octopuses' entire snowglobe collection, and by the series he gained his full on Stomach of Holding.
- Four-Temperament Ensemble: The Sanguine.
- Hyperspace Arsenal: Apparently his stomach contains a rare atom which can create absolutely anything.
- Intelligible Unintelligible: At times, his speech can be understood fairly easily, especially in later episodes. Either way, if what he's saying is important to the plot, the other penguins will usually provide some sort of translation.
- Love Makes You Crazy: Or crazier. See "Hello, Dollface" or "Kaboom and Kabust".
- Mad Bomber: He has periods when his first response to anything is to cough up a stick of dynamite and a match.Rico: Kaboom kaboom kaboom?
Skipper: Rico, enough with the dynamite already.
- Manly Gay: Rico's Miss Perky doll only shows in a handful of episodes, and Rico shows the most instances of attraction to other males, while having no relationships with a real, living female. Since homosexuality is usually associated with femininity, it's funny to see the most violent, aggressive male show the most signs of homosexuality.
- Nightmare Fetishist: When something unpleasant is happening to somebody else - or even to them - the other penguins may be horrified but Rico is more likely to stare with a big grin on his face. Sometimes it's just background but other times it's disturbingly obvious.
- Like Rico serenely munching away on popcorn while watching a brutal Nature Documentary with penguins getting gobbled up by leopard seals.
- When Kowalski and Private are clearly horrified/nauseated at Skipper's broken flipper in "I Was a Penguin Zombie," Rico looks… a little too interested.
- In "Roger Dodger", as Roger is being pummelled offscreen by the rats, Rico stares at said beatdown, a blank smile on his face, his left eye twitching, and licks his beak at the end.
- Nausea Fuel: In-universe example. The only thing that makes him gag is love.
- Overly Long Tongue: Possibly concealed within the Stomach of Holding most of the time.
- Person of Mass Destruction: So very much.
- Psychopathic Manchild: Of the Dumb Muscle type. He also acts like a disappointed child whenever Skipper doesn't allow him to use explosives.
- Red Oni, Blue Oni: The red to Kowalski's blue.
- Rugged Scar: The scar over Rico's beak wasn't there in the movies and has never been explained in the series, mostly existing so that he's easier to tell apart from Skipper, whom he otherwise closely resembles.
- Singing Voice Dissonance: Later episodes add a running gag of him randomly singing "Fiiiiiiiiiissssh!" in a clear baritone voice.
- Silent Snarker: Frequently.
- Stomach of Holding: He can swallow almost anything and regurgitate it for later use. He has coughed up things ranging from paperclips and lit TNT, to an Air-To-Ground missile and platform. He's even capable of swallowing and regurgitating other characters safely.Kowalski: The things I have seen...
- Token Evil Teammate: The mischievous, psychopathic, loose cannon of the penguins.
- Too Kinky to Torture: In "Needle Point", after Rico gets his shot, he actually doesn't seem to mind the pain too much, scooching his butt around on the floor. Or perhaps he just likes comforting the pain. Either way he looks really kinky.
- Trademark Favorite Food: Fiiiiiiiiiiiiiish!
- Turn the Other Cheek: Rico tends to forgive people quite easily for anything, with the general implication that he's done something similar. When Marlene went feral and attacked him outside the zoo, he had to stagger back into the zoo with her tying him up with his own tongue. Upon receiving her apology for going feral, he replied simply, "Meh, what you gonna do?"
- Uncleanliness Is Next to Ungodliness: It is often suggested that along with his other bad habits, Rico smells bad or carries disease - in "Stop Bugging Me" he makes friends with cockroaches and in "Cradle And All" the penguins initially assumed that the smell of a soiled diaper was actually coming from him.
The youngest member of the team. Voiced by James Patrick Stuart, he tends to be the most sane and logical — at least in comparison to Skipper's paranoid delusions, Kowalski's mad science, and Rico's love for explosions. Sometimes he's also got a little bit of childish naïveté. He has a tendency to get the sucker jobs.
- Badass Adorable: His cuteness is actually weaponized in "Cute-astrophe".
- Beware the Nice Ones: Private can pull off a Moment of Awesome just as easily as any of the other penguins. Betraying his belief that all animals are basically good also serves as a Berserk Button for him.
- Bishie Sparkle: Parodied, his weaponized cuteness includes a spontanously generated rainbow. In High moltage where he was molting, it had the opposite effect of REALLY grossing people out.
- Butt Monkey: He's the team rookie, after all.
- Cheerful Child: The youngest of the penguins, Private is the most cheerful zoo animal.
- Comically Cross-Eyed: Private has outward cross-eyes, giving him a constantly goofy expression, which is in line with him being childishly naive. He's still The Heart of the team, and considered the cutest one, and is often the Only Sane Man compared to his Ax-Crazy comrades.
- The Conscience: Though usually holding the moral high ground, he also tends to be rather timid when first voicing his concerns, gradually losing his patience as Hilarity Ensues.
- Cuteness Proximity: Honed to the point of becoming an incredibly effective weapon in "Cute-astrophe".
- The Cutie: There seems to be an in-universe consensus on this, with both Skipper and Kowalski reassuring him of being "Adorable!" on separate occasions. They also use this trait as a tactic once in awhile, and it even features as a plot point in one of the episodes, wherein he becomes jealous that his "title" has been handed over to someone else.
- Dark and Troubled Past: Parodied when Private's backstory is revealed in "Mr. Tux". He used to be a hardcore miniature golf player in Florida.
- Flanderization: Less so than the other penguins, but his British accent is more pronounced.Skipper: You just stick to the cuteness and the hackney Britsh Slang. "Okay, guv'nor"?Private: Right Skipper. I'm a jolly pip, I am!
- Florence Nightingale Effect: The cause of his crush on student nurse Shawna.
- Four-Temperament Ensemble: The Phlegmatic.
- The Heart: Spelled out in "Command Crisis."
- Hidden Depths: He likes Shakespeare and he used to be professional mini golfer.
- His Name Really Is "Barkeep": Private is his name and his rank.
- Innocent Blue Eyes: He's naïve and pretty childish and he has bright blue eyes to go with it.
- Love Makes You Crazy: His crush on Hospital Hottie Shawna in "Love Hurts" led him to deliberately injure himself. When the others threaten to come between them, he improvises a Wounded Penguin Gambit.
- Nice Guy: According to Julien, he's the nicest guy in the zoo.
- Sanity Ball: Most often, it's in his flippers. "Skorca!" inverts the situation by having him paranoid about the title character and the other penguins not believing him.
- Sweet Tooth: Especially when it comes to butterscotch lollipops.
- Token Good Teammate: The most well-intentioned and unambiguously heroic member of the group.
- Trademark Favorite Food: Peanut butter winky. Also butterscotch lollipops.
- Why Did It Have to Be Snakes?: He's afraid of badgers, and not fond of cockroaches.
King Julien XIII
A ring-tailed lemur and (apparently self-proclaimed) king. Egomaniacal and ditzy, he's the closest thing the show has to a recurring antagonist. But at the same time, the penguins tolerate him when he's not being that big of a jerk. Julien "rules" over a small empire also comprising Maurice and Mort (see below). Voiced by Danny Jacobs.
- Ambiguously Bi: He likes to dance; he's obsessed with his own booty; he gives bedroom eyes; he's dressed in drag on occasion (though that may be even less significant to his actual sexuality than in Real Life crossdressers, as he normally wears nothing but his crown); despite his attempts at maintaining a ladies' man image, he was unfamiliar enough with females that he didn't know where mammal babies come from, and was disgusted to find out the truth (though that may just be simple Cloud Cuckoo Lander status); and one episode blatantly ships him with Rico. Oh yeah, and he even said that he has a Girlfriend in Canada. On the other hand, he "courted" Marlene twice and has hit on Rico's Ms Perky doll. Wild Mass Guessing has also pegged him as Ambiguously Transsexual, thanks to the Animal Gender-Bender mentioned below. Taken to its limits with Julien in "It's About Time," when he sees Skipper and Private wrestling over the episode's MacGuffin and begins poking Maurice.Julien: Ah, look at them Maurice. Why can't we play affectionately like that?
- Animal Gender-Bender: Real Life lemur groups are ruled by females. Then again, now he's in a zoo with only two other lemurs, both of which are male, and he's probably the nearest thing they've got. Also, when he claims Eggy is his, Kowalski says mammals can't lay eggs and asks if he's part platypus, without mentioning that males don't lay eggs either. (Then again, see above.)
- Anti-Hero: The closest thing the show has to a recurring antagonist - but he also repeatedly helps out the penguins when it benefits him.
- Anything That Moves: Forget Ambiguously Gay or Bi the Way, it's easier to believe that Julien just loves to be admired, and doesn't care whether that admiration is sexual or otherwise.
- Attention Whore: He views himself as King of the zoo.
- Berserk Button:
- Never, EVER touch King Julien's feet. And if you ever decide to skate over them... well, say hello to Julienderung.
- "Friend-in-a-Box" suggests that a Freudian Excuse may be involved. After Mort becomes obsessed with a portable video game, Julien goes out of his way to try and force Mort upon his feet, claiming that he wants to experience the joy of kicking Mort off. Eventually, he even goes so far as to beg Maurice and the penguins to pay attention to the royal feet.
- NEVER forget or ignore King Julien Day, for that matter... "Which forgetter is next for the whooping?! Come on, I want you to hurt LIKE I DO! UAHAHAHAHAA!"
- Buffy Speak: A normal part of his speech pattern, along with Malaproping; he frequently makes comments like "What is up with the unbig tiny-littleness of my royal estate?"
- The Caligula: Parodied by his existence.
- Comic Trio: With Maurice and Mort; he's The Leader.
- Crazy Jealous Guy: Thanks to his believing that It's All About Him, he quickly gets jealous when somebody/something else is getting the attention he thinks he deserves. He also doesn't like that Marlene is crushing on Fred rather than him. He doesn't give a reason why this makes him so upset, other than that Marlene was "in love with Julien" the whole time before... which was another lie.
- Department of Redundancy Department: Part of King Julien's regular speech pattern.
- Distressed Dude: He's this thrice: once with a feral Marlene, once with Savio the boa and once with the Red Squirrel.
- Evil Laugh: Not as amazing as other Nicktoons, but pretty close. Usually Played for Laughs, much like most of the tropes on this page.
- Fat and Skinny: Skinny Julien is the silly one, and fat Maurice is the Straight Man.
- Flanderization: A bit more of a Jerk Ass than in the movies, but he still has his moments (such as saving Skipper's life in one episode). His dialect is also noticeably stronger.
- Friendly Enemy: To Skipper. The two spend most of their shared screentime arguing and generally being annoyed by each other, but Skipper will go out of his way to help Julien, and Julien has gone to Skipper to have his problems fixed. They were actually mistaken as 'BFF's by Skipper's Arch-Nemesis Dr. Blowhole... and the other penguins said he had a point.Julien: So I face danger and the adventure of a lifetime and nobody will ever know about it?!Skipper: Welcome to my world. That makes you an honorary penguin.Julien: Does that mean I am your BFF?Skipper: Eehh... we'll keep that code on the QT.
- Fun Personified: He's the master of boogies, singing and parties.
- I Am Not Weasel: In one episode, he tries to tell a Crazy Cat Lady that he is not a kitty.
- Incidental Villain: Being a spoiled ego-maniacal control freak, he's the most common antagonist on the show, with his schemes often being the catalyst for larger plots or being the main threat of the episode. But, despite being something of a Jerk Ass, he is only casually disliked by the rest of the cast. The other characters tolerate him when he's not doing anything antagonistic, since he's not generally a bad guy, just a spoiled jerk who occasionally screws with people to get his own way.
- In-Series Nickname: "Ringtail."
- Interspecies Romance: A one-sided crush on Marlene, an otter.
- It's All About Me: He is the King, and so obviously is more important than any non-kingly animals, right?
- Jerk with a Heart of Gold: He has his moments of being... less mean to the others. Notably, King Julien Day is a holiday dedicated entirely to him, participation was mandatory and lack of participation meant severe punishment, but unexpectedly includes a closing ceremony where Julien rewards his subjects.
- Large Ham: With a side of Keet.
- The Load: Bringing him along usually does more to hurt the penguins than help.
- Malaproper: He is a bit of a word mangler. Examples include "These stitions are very super!" and "No one will be sucking seed!"
- Man Child: He has a tendency to throw childish tantrums, and on one occasion starts talking to his cuddly toys when he's depressed.
- The Millstone: When he tags along on the Penguins' missions, he occasionally helps, but usually ends up being more of an obstruction.
- Narcissist: To the point that he has distinct ho yay with a robot copy of himself.
- Nice Hat: His crown. He loves it a lot, but he has a spare for emergecies.
- Nominal Hero: Taken Up to Eleven in the second movie, where he is selected for a musical onslaught against the monster MP3 player.
- Papa Wolf: To save the baby Fusa from a snake. He even tells the snake to eat him first when they get cornered, hoping his fuzzy build will make it choke so it can't eat the baby.
- Singing Voice Dissonance: Nothing major, but the end of his short Congaga song in "Eclipsed"' is rather impressive, especially considering his usual voice is not all that pleasant.
- Sixth Ranger: When the squad is lacking in numbers, Julien often comes in as a substitute.
- The Sociopath: King Julien displays far too many of the typical sociopathic qualities to ignore this trope.
- Token Evil Teammate: Not evil per se, but a narcissistic Jerkass who often tags along with the penguins but only cares about himself.
- True Companions: Among himself, Maurice and Mort. Arguably.
- Upper-Class Twit: Considers himself to be king of the zoo, and isn't very smart.
- What the Hell Is That Accent?: The same general quasi-African accent in the movie, only (as mentioned above) more exaggerated.
- Wholesome Crossdresser: He dressed as a cheerleader in the episode "Miracle On Ice" and was jealous of Skipper's "pretty pink bow" in "Miss Understanding". The "wholesome" is debateable, but his un-wholesome characteristics are not related directly to the crossdressing.
An aye-aye who serves as King Julien's right hand man and advisor, although Julien rarely follows his advice. Although he seems easily annoyed by Julien's antics, Maurice isn't above saving his life. Voiced by Kevin Michael Richardson.
- The Big Guy: See Fat and Skinny, above.
- Brainwashed and Crazy: Gets like this in "Kingdom Come" thanks to a bad batch of lychee nuts.
- Chessmaster Sidekick: Has shades of this. At times, it seems that he really doesn't want to be part of Julien's world, but for some reason he stays faithful.
- Closer to Earth: He is easily the sanest of the three lemurs.
- Comic Trio: The Only Sane Man to Julien's Leader and Mort's Fool.
- Four-Fingered Hands: A strange aversion. Maurice has five fingers/toes, yet Julien and Mort each have four.
- Funny Animal Anatomy: This is what a real aye-aye looks like. Eek.
- Only Sane Man: When you're working for someone like Julien, of course someone has to be there to rationalize with him.
- Servile Snarker: Despite being aware how insane Julien is (and occasionally making snarky comments about it), he still follows his orders.
- Stealth Pun: An aye-aye who is King Julien's Yes-Man.
A mouse lemur who is also part of Julien's companions. He is pretty much there to be the victim of physical comedy, although Marlene in particular seems to care for him. Voiced by Andy Richter.
- Badass Adorable: Although small, dumb and pathetic, he's shown to be capable of beating Skipper at arm wrestling. Another episode has him uprooting trees.
- Berserk Button: Not surprisingly, King Julien's feet, as indicated by his reaction to being separated from them.
- The Chew Toy: To the point where he's declared too dumb to feel pain. Lampshaded in one episode, where he says, "Yay, I'm expendable!"
- Comic Trio: The Fool to Julien's Leader and Maurice's Only Sane Man.
- Creepy Child: He's not quite a child, but he certainly has moments where he comes off as this. For example, he's way happier about being used as bait for a hungry falcon than he should be."I'm tasty!"
- Disability Superpower: In "Sting Operation", it's revealed that he's literally too stupid to feel pain.
- The Ditz:"Which of the colours is blue?"
- Fearless Fool: See above.
- Feel No Pain: Also see above.
- Flanderization: In the movie, the royal feet get merely a passing reference when Julien misinterprets Mort cowering in fear next to him. Here, Mort has a full blown fetish for Julien's feet.
- I Call Him "Mr. Happy": Non-genital example. He's named his tail "Rodney".
- In-Series Nickname: "Sad Eyes".
- Older Than They Look: Word of God is that he's actually the lemur equivalent of a thirty-five-year-old. Mouse lemurs simply look like babies their whole lives.
- Paste Eater:"I'll get the glue."
- Ridiculously Cute Critter: He's cute enough to rival Private.
- Small, Annoying Creature: He's this with his feet fetish.
- Tagalong Kid: Quite often.
- Team Pet: He's either Tagalong Kid, this or both.
- What the Hell Is That Accent?: A completely unidentifiable one. It usually comes across as heavily warped Baby Talk.
- Yandere: Mort is quite devoted to King Julien, and not just to the royal feet.
Central Park Zoo
Mason and Phil
A pair of chimpanzees. Mason is a stuffy British-accented one (voiced by Conrad Vernon), while Phil is mute and communicates only through (completely accurate) sign language.
- Divergent Character Evolution: Thanks to greater focus on them (compared to their One-Scene Wonder status in the original movies), Mason's Neat Freak nature and Phil's relaxed and slovenly behavior have been revealed and developed.
- Four-Fingered Hands: Averted for the sake of Phil's sign language.
- Never Learned to Read: Mason is illiterate. Phil, on the other hand, is the penguin's go-to translator, with Mason translating his signing.
- Odd Couple: Phil is a total slob, much to Neat Freak Mason's chagrin.
- Repeating so the Audience Can Hear: While this is usually justified for the benefit of other characters that don't know sign language, Mason will do this even if Phil is the only other one around.
- Road Apples: Mason mentions throwing poo a couple of times, though this is never seen on-screen.
- Shown Their Work: Phil's sign language is completely accurate.
- The Speechless: Phil.
A female otter who tolerates the penguins. Playful and kind, she tries to see the best in others and is one of the only characters who cares for Mort's well-being. Voiced by Nicole Sullivan.
- Action Girl: Has saved Skipper and Kowalski's lives on separate occasions.
- Berserk Button: Never leave her outside or she'll go nuts!
- The Chick: The only major female character. She often joins the penguins as a fifth member on their adventures.
- Deadpan Snarker: Goes hand in hand with her Only Sane Woman status.
- Expy: Arguably, she's one for Gloria the hippo and/or Alex the lion.
- Hartman Hips: At the very least, she's obviously more curvy than your average otter.
- Jekyll & Hyde: If she leaves the zoo grounds, she becomes feral. Dee Bradley Baker voices her feral side.
- Nice Girl: Snarkiness aside, Marlene is mostly a friendly and welcoming person who refuses to judge others before getting to know them
- Only Sane Woman: Along with Maurice, she seems to be the only one trying to reason with the main characters. She even tries to provide some stable ground when Skipper seems to be losing it.
- Playful Otter: Love of clams? Check. Playful and cute? Check.
- Sliding Scale of Beauty: World Class Beauty as Arlene.
- Smart People Play Chess: Shown playing chess with Skipper in "Crown Fools".
- The Smurfette Principle: She's the only protagonistic female character.
- Stealth Hi/Bye: Does this on occasion. Skipper even tells her to say something before surprising them once.
- Super-Powered Evil Side: Due to being born in captivity, whenever she leaves the confines of the zoo's walls she goes 'feral', which results in an increase in strength, speed, and ferocity, but a decrease in intelligence.
- Women Are Wiser: In comparison to the penguins (save for Private). Often overlaps with Only Sane Woman.
Voiced by Mary Scheer. She is a zookeeper who doesn't seem to care too much for her job, and expresses annoyance at tour groups.
- Catch Phrase: "Whatever."
- Butt Monkey: She suffers a lot, though she deserves it most of the time.
- Deadpan Snarker: Has moments of this.
- Jerkass: And she usually suffers for it.
- Getting Crap Past the Radar: Her dance that went viral.
- The Slacker: She puts the bare minimum of effort into her job, and frequently responds to suspicious occurrences with "ahh, whatever."
Bada and Bing
Two hulking, thuggish gorillas living in the zoo. Bada is dark grey, Bing is a lighter shade of grey.
- Animals Not to Scale: They are unusually large gorillas, not much smaller than Burt the elephant.
- Dumb Muscle: Neither of them is too bright, but they are incredibly strong.
- Killer Gorilla: They occasionally act as bullies to the other animals, and may go on a rampage if you steal their food.
- Meaningful Name: "bada bing bada boom" is a stereotypical mobster phrase
- Those Two Guys: Seldom seen without each other.
- Trademark Favourite Food: Bananas.
A large, friendly alligator. Although the others are terrified of him at first, they grow to like him once they find that he is pacifistic and friendly. Eventually he moves into a habitat in the zoo. Voiced by Richard Kind.
- Ambiguously Gay: A friendly, sensitive, soft-voiced alligator who wants to sing Broadway tunes and bake muffins to placate his enemies…
- Chekhov's Gun: His singing in "Roger Dodger".
- Does Not Know His Own Strength: When he's in a confined space with the penguins, he becomes a menace simply by turning around.
- Gentle Giant: He has to undergo a mind-swap with Rico at one point because he's simply not aggressive, which makes him an easy target for the sewer rats.
- Nice Guy: Despite his fearsome appearance, he's friendly, soft-spoken and mild-mannered.
- Out-of-Character Moment: He seems genuinely annoyed at Julien's pranking in the "April Fools" episode.
- Reluctant Monster: He is a terrifying alligator, but also a very nice and mild-mannered person.
- Sewer Gator: Roger is a sewer gator who is good friends with the penguins.
The resident elephant at the zoo. Though normally an easygoing guy, he's easily annoyed by anyone messing with his food. But if you do manage to set him off...
- Beware the Nice Ones: Don't get him angry.
- Berserk Button: Don't touch his food.
- Cultured Badass: Burt is a lover of Victorian (particularly Dickensian) literature, and an accomplished artist. He also admits to have always wanted to visit Paris. He's also a huge elephant, and single handily beat up Savio the giant boa.
- Gentle Giant: A good-natured elephant.
- Trademark Favorite Food: Peanuts.
- In-Series Nickname: Long Trunks and Big Grey.
A paranoid koala who first appears in "Night and Dazed". He is rather afraid of the penguins in their attempts to be nice to him, mainly because he's often the target of unintentional injury. Voiced by Dana Snyder.
- Australian Accent: Strangely averted.
- Deep Sleep: He is nocturnal to an absurd degree; he essentially goes into a coma the moment sunlight hits him and can't be woken until it sets.
- Not So Different: as seen in "Kanga Management". Because he's nocturnal and Joey's diurnal, Joey is angered by Leonard always doing something when trying to sleep...but at the end, they bond when they realize that they both hate the penguins.
- Properly Paranoid: You would be too, if the penguins accidentally blew up your habitat.
An ill-tempered, violent kangaroo with a stereotypical Australian accent. Antagonist to both the penguins and the lemurs most of the time. Voiced by James Patrick Stewart.
- Animal Gender-Bender: He has a pouch.
- Australian Accent: He shares a voice actor with British-accented Private.
- Hair-Trigger Temper: He'll beat up other animals just for being in his habitat... and deliberately keep them there so that he can beat them up some more if they try to escape.
- Jerkass: Joey is excessively violence prone and unfriendly.
- Kangaroos Represent Australia: He speaks with an Australian Accent.
- Stupid Evil: When fighting the "skorca", he beats off the penguins first because he doesn't want them to win against it. Skipper calls him out on it, but Joey dismisses him on the grounds that "Joey doesn't share".
- Third-Person Person: Lampshaded in "Kanga Management".
- The Worf Effect: Officer X and Eggy have pulled one on him.
Animals Outside the Zoo
A not-too-bright squirrel who lives in the park. When the penguins leave the zoo, they often cross paths with him. Voiced by Fred Stoller.
- Ambiguously Gay: He seems mostly indifferent to Marlene when roped into dating her, and didn't seem too upset when she broke up with him, and is shown to live with Antonio ("the otter bachelor of Central Park").
- Ambiguously Jewish: Has some traits of this.
- Crouching Moron, Hidden Badass: His "fight" with Julien was initially interpreted to be this until he revealed he simply did everything accidentally and let Julien's clumsiness do the rest (which a humiliated Julien admits).
- Cuddle Bug: "What am I gonna do, say no to a hug? I love hugs!"
- Distressed Dude: He gets tied up by the Red Squirrel.
- The Ditz: Intelligence is not his strong point.
- Dumb Is Good: He's too stupid to be evil, as the Red Squirrel learned pretty quickly.
- Genius Ditz: He actually does know the answer to the question that scientists have been trying to figure out for years; how much wood would a woodchuck chuck if a woodchuck could chuck wood?
- Horrible Judge of Character: He considers Archie his best friend (despite calling him a backstabbing liar and a cheat) and even allowed Julien to be his financial adviser when he became rich. In addition, he is prone to trusting complete strangers based on how well they hug.
- Literal-Minded: Spelled out in one episode where Marlene tries to date him. She asks him to show her the town and he answers by pointing and saying, "That way."
- In-Series Nickname: Bushy Tail.
- Madness Mantra: "Acorns! Jackpot! Acorns! Jackpot! Acorns! Jackpot!"
- Rags to Riches: He becomes wealthy (at least in squirrel terms) following his mass acquisition of several hundred pounds of acorns. He's promptly exploited first by Julien and then by the Red Squirrel who want his money for their own selfish purposes.
A stray cat whom the penguins first meet in a failed attempt to fly to the moon. Max has reappeared in several episodes, often seeking help from the penguins. Voiced by Wayne Knight.
- The Cameo: He appears for about two seconds in "The Helmet".
- In-Series Nickname: "Moon Cat". It's lampshaded by him when he points out that he's not really from the moon.
- Lovable Coward: Nearly always appears when fleeing a threat of some sort.
- Tastes Like Friendship: In his debut, he gives up trying to eat the penguins (who are unaware of his intentions) when they hand him some food. He so rarely gets food on his own that he is grateful, and pretty much remains their friend after that.
- True Companions: He'll occasionally try to abandon the penguins to save himself, but always come back when he realizes they are his only friends.
- Yank the Dog's Chain: In his introduction, he falls for Schmuck Bait; a pigeon trolls him by pretending to be unable to fly. The pigeon then rubs it in his face and flies off, leaving a starving Max to wish for a bird that couldn't fly. He spends an awful lot of time being the Butt Monkey even after the penguins give him food.
An adorable little duckling whose egg came under the penguins' care during "Parental Egg-Stinct". After hatching and being returned to Mama Duck, he showed an innate talent for Skipper's style of leadership.
- All Your Powers Combined: Thanks to being cared and trained by the penguins while still an egg. At the end, Julien teaches him how to dance, resulting in Eggy talking like Julien (see Buffy Speak above).
- Badass Adorable: He's a cute little duckling, but he achieved powerful combat skills under the penguins' care.
- Buffy Speak: He copies Julien's idiosyncratic speech patterns.
- Defeat Means Friendship: With King Julien.
- Troubling Unchildlike Behaviour: How Mama Duck views his obsession with combat and commando operations.
- Tykebomb: Leads to Defusing The Tykebomb in "Hard Boiled Eggy".
A falcon who crash-landed in the zoo, setting off the events of "The Falcon and the Snow Job" and serving as Skipper's Temporary Love Interest as he fought to clear her good name.
- Carnivore Confusion: Directly acknowledged and the root of the others' distrust. She tries to allay concerns by swearing not to eat anyone in the zoo. She didn't know that they also had friends outside the zoo, like Fred.
A dolphin whom Kowalski still yearns after. Appears in the Grand Finale, "The Penguin Who Loved Me."
- Badass Adorable: She may not have as much experience as the crew, but holds her own during the Grand Finale.
- Beauty Mark: Has one just under the corner of her left eye.
- Friendly, Playful Dolphin: She's kind, friendly, and cares for her brother. It's not her fault that her brother is a Supervillain.
- The Ghost: She is continually mentioned throughout the series, but doesn't appear until the finale.
- Interspecies Romance: Aside from Kowalski's crush on her, she's dated several others outside of her species.
- Just Friends: She tries telling Kowalski that she she likes him, she doesn't like like him.
- Tailfin Walking: Manages this by getting her fins on one of Dr. Blowhole's scooters.
A platypus who helps Doris contact Kowalski during "The Penguin Who Loved Me".
- The Ace: Kowalski can't help but be jealous of him, especially when he manages to impress Skipper with his fighting skills.
- Everything's Better with Platypi: He appears to be a heroic and helpful platypus. He is eventually revealed to work for Dr. Blowhole.
- Poisonous Person: Has venomous spurs on his feet, which he uses to help take down opponents with ease.
- Screw This, I'm Outta Here!: Immediately backs down when faced with Rico aiming a bazooka his way.
Manfredi & Johnson
Two former members of Skipper's team, they are often name-dropped whenever some ill fate or accident is mentioned. They are finally seen in "The Penguin Who Loved Me." James Patrick Stuart voices Manfredi while Danny Jacobs voices Johnson.
- Those Two Guys: From what we know about them, which isn't much.
- Noodle Incident: Manfredi (the larger sized penguin) has lost his left foot, now replaced by a stick while Johnson (the Kowalski-sized penguin) broke his right flipper and seems to have a burn on his body. We have no idea which of the stories (if any) led to these accidents.
- Unexpected Character: Everyone assumed these guys were dead and no one expected to actually see them.
- Yank the Dog's Chain: The penguins finally find them, but the two remain unnoticed despite their pleas for help and given how the group said they won't be back again, it looks like these guys are screwed.
A mad scientist and primary antagonist to Skipper. At first, he was only mentioned in passing by Skipper, leading to Marlene's belief that he didn't exist. The half-hour "Dr. Blowhole's Revenge" showed him to be real. Voiced by Neil Patrick Harris.
- Arch-Enemy: To Skipper.
- Bigger Bad: Is mentioned as Skipper and the Penguins' Arch-Enemy, but rarely appears or has a large effect on the series.
- Badass Bookworm: He might be an extremely intelligent scientist who doesn't fight often, but when we actually see him fight, he's able to go toe to toe with Skipper in a prolonged fight.
- Calling Your Attacks: All of his inventions announce themselves with the same dramatic voice whenever they are activated.
- Disproportionate Retribution: He tried to flood the world in revenge for being used as a show dolphin.
- Embarrassing First Name: Francis.
- Evil Counterpart: At least with the technology and science department, to Kowalski.
- Evil Genius: He is a brilliant inventor with a grudge against the penguins.
- Evil Is Bigger: He towers over the penguins.
- Evil Is Hammy: He presents himself in an over-the-top, dramatic manner.
- Eye Beams: Can fire a laser from his cybernetic eye.
- Friendly, Playful Dolphin: Subverted. Despite being a dolphin, he's vile and wants to destroy the penguins. He temporarily becomes a straight example when he gets his memory erased.
- Giant Enemy Crab: Has lobster henchmen, and also made Crome Claw, a giant lobster with a metal claw.
- Genre Savvy: He's smart enough to know to NOT leave his enemies in a Death Trap and then leave the room, he stays to watch unless it'd kill him as well.
- Good Scars, Evil Scars: Has a scar over his right eye that's just barely visable under the metal plate covering it.
- Hoist by His Own Petard: Ultimately has his memory erased by his own machine.
- Insistent Terminology: No, Julien, he's not a fish.
- Knight Of Cerberus
- Mad Scientist: An evil inventor.
- The Reveal: He and Doris are siblings.
- Sapient Cetaceans: He is a dolphin and an Evil Genius.
- Tailfin Walking: He stands on his tail-fins on an electric scooter.
- Verbal Tic: He has habit of pronouncing penguins as "peng-you-ens". According to Kowalski, he probably does it just to tick them off. While not exactly verbal, he also has a habit of having his computer dramatically announce the names of his creates.
- Vile Villain, Saccharine Show: He fits it to an E, although half the main protagonists are Heroic Sociopaths with little to no concern for collateral damage
- Villain Song: Get's a few in "Doctor Blowhole Strikes Back" (It Makes Sense in Context). It's actually a plot point that he gets the best songs. Most noteable being "Brand New Plan", which is a pretty straight up Villain Song. Helps he's voiced by Neil Patrick Harris.
- Where Does He Get All Those Wonderful Toys?: Kowalski complains about bad guys always getting the coolest stuff, but it's never explained where he gets the resources required for them.
- Xanatos Speed Chess: He normally has a plan to begin with, but is far from incapable of improvising on the fly. Refrenced in "Brand New Plan", where he points out that, despite things having not gone as he planned, it'll work out perfectly for him and makes up a new plan on the fly.
An animal control officer who has made repeated, failed attempts to capture the penguins while they're out on the town. After getting thwarted by the penguins in one episode, he loses his job and reappeared later on as an exterminator and so on. Voiced by Cedric Yarbrough.
- Badass Beard: Before it was ripped out by tape thanks to the penguins. It grew back though.
- Bald of Evil: Tries to capture the penguins and is bald.
- Broken Ace: Was mentioned by his former boss in animal control that he was best officer on their staff until he went crazy obsessing over the penguins who ruined his life.
- Cassandra Truth: Officer X constantly tried to tell others that the penguins were responsible for multiple acts of destruction and mayhem, but was decried as a laughingstock and lunatic and fired from job after job. When the penguins antics were revealed worldwide in a news story, he was absolutely elated, but soon broke down into tears and sobbing when the story was mocked as a news hoax.
- Charles Atlas Superpower: He's tougher, stronger, and more agile than any other human shown and has taken down the penguins and dangerous animals like Joey the Kangaroo with ease.
- Cloudcuckoolander: Most people think he this cause lets face it, when you hear you keep losing to Penguins, it doesn't send the image of a sane person.
- Combat Pragmatist: Uses Kowalski as a boomerang to hit Rico and Private in "A Kipper for Skipper".
- Cool Car: His animal control van features a laser, claws and a winch. He also gets angry when it gets destroyed in "What Goes Around".Officer X: I loved THAT VAN!
- Cool Shades: He wears them all the time.
- Deadpan Snarker: He fires off a salvo of puns in "The Officer X Factor."
- Implacable Man: He will never stop chasing after his prey. Even Mason the Chimpanzee admitted that Officer was "not human" after pelting him with animal feces because he wouldn't stop no matter how much he threw at him.
- Leit Motif: Officer X has his own, instantly recognisable theme.
- New Job as the Plot Demands: Because of the penguins, of course!
- No Name Given:Alice: X, eh? Is that the name your mommy gave you?
Agent X: Mother never told me my real name. Said it was classified.
- Pungeon Master: Easily notified by the penguins are his plentiful one-liner puns. Can even be a Hurricane of Puns.
- Real Men Wear Pink: His exterminator uniform is pink.
- Scary Black Man: He's visibly of African-American descent and he's evil.
- Scarily Competent Tracker: Once he decides to track down his prey, literally nothing will stop him. He even managed to cage and restrain Marlene's savage persona when it was split from her by one of Kowalski's experiments.
- Shock and Awe: Wields a shock stick.
- The Cuckoolander Was Right: Despite being clearly obsessed with the penguins and ridiculed by the public as a loon, he's the only human shown fully aware of and posing a threat the the penguins' schemes and plans. Because of this, he was capable of constantly out-thinking the penguins, and anticipating their plans when hired as their zookeeper.
- The Nose Knows: He can immediately sense the presence of the penguins by smell regardless if they are hiding.
- The Worf Effect: Pulls one on Rico and one on Joey.
- You Shall Not Pass: Parodied in "What Goes Around".Officer X: Delinquent penguins! In the name of the Metropolitan Department of Animal Control and Pretzel Cart Regulation, You Shall Not Pass!
A large, muscular sewer rat with a heavy East-Side accent and a tendency to say "Dude!" and "Awesome!" a lot, who often antagonizes the penguins. Voiced by Diedrich Bader.
- Dumb Muscle: A muscle-bound rat who isn't smart.
- Gullible Lemmings: In "Rat Fink", he blindly follows what he believes to be the true rat king, despite the Paper-Thin Disguise. He only becomes confused when the invasion plan is put into action.
- Hustling the Mark: See Obfuscating Stupidity.
- Mooks: The other sewer rats who follow him.
- No-Holds-Barred Beatdown: Inflicts this on Skipper in "Crown Fools".
- Obfuscating Stupidity: He and the rats pretend not to know the rules of ice hockey before the penguins challenge him to a game. It turns out they were hustling the penguins, and the rats curb-stomp them.
- Rat King: He's not a literal "rat king" (which are several rats stuck together by their tail), but rather a gigantic, muscle-bound rat.
- Recurring Character: So far, he's appeared in a total of eight episodes.
- Rodents of Unusual Size: Exaggerated; he's taller than the penguins. This is because he's a genetically modified lab rat.
- Large and in Charge: Duh. He's "The Rat King" for a reason. He's very tall.
- The Worf Effect: He seems to exist only for the Penguins to have moments of awesome against him. He also inflicted this on Skipper in "Crown Fools".
- You Dirty Rat!: An evil rat.
A puffin who has a dark history with Skipper. Whatever happened in Denmark is between Skipper, him and the Danes.
- Affably Evil: His first episode revolves around him trying to make peace with Skipper, but it turns out to be an act.
- Even Bad Men Love Their Mamas: Played with in the ep Smotherly Love.
- My Sister Is Off-Limits!: Attempted to Invoke this, but:
- Hans: —And I kissed your sister! On the lips!
Skipper: I don't have a sister. And if I did, she wouldn't have lips.
Hans: ...Oh. Then who did I kiss?
- Dub Name Change: To "Lars" in the German dub. This is probably due to the pronunciation of Hans being a lot shorter in German than it is in English (the a is much longer in English). Lars is about the same length as the English Hans and looks similar in lip movement.
- National Animal Stereotypes: A Danish puffin.
- Shamu Fu: He always (ray guns and "capuccino gun" do not count) wants to fight using a fish, but he is terrible in "fish flynning"
- Third-Person Person: Sometimes he starts to talk like this:
- Hans: —Hans will return again!
andHans: —What will be now with Hans the puffin?
A lemur who was mailed from Hoboken Zoo to Central Park and back.
A boa constrictor who was temporarily transferred from Hoboken Zoo to Central Park.
- Dashing Hispanic: Has a strong Spanish accent, and always acts charming and witty even when he's gloating about taking his revenge on his enemies by swallowing them one by one, regurgitating them and then swallowing them in reverse order
- Diabolical Mastermind: His intellect could possibly rival Dr. Blowhole's, since in each appearance he always managed to find ways to outsmart the penguins and take down previous threats. Not only did he figure out how to unlock the locks in his habitat in his first appearance, but the next episode "All Tied Up With A Boa", he took down the zookeepers at his enclosure, swam the Hudson River all the way towards the Central Park Zoo presumably on memory alone, got Burt the elephant (who beat him up in the first episode) out of the way by mailing him a mouse, evaded every single trap devised by the penguins, and overpowered them by using said traps to incapacitate them along with Marla, Maurice and Mort (who were also armed). He would have won if it weren't for Julien and a bucket of old popcorn butter.
- Disproportionate Retribution: Lampshaded by Marline when they learn Savio has escaped from Hoboken Zoo to take revenge on the animals for sending him there, even though most of them were just his victims.
- The Dreaded: News of his escape in "All Tied Up In The Boa" sent the penguins (with the exception of Skipper) into Troubled Fetal Positions, even Rico who is the Axe-Crazy of the group.
- Hurricaneof Puns: Always makes constant food related puns when he's about to eat someone. Lampshaded by Savio himself, when Julien makes fun of one his lamer ones.
- Knight of Cerebus: Episodes in which he is involved are generally more serious.
- National Animal Stereotypes: A boa constrictor with a Hispanic accent.
- Picky Eater: Has a predilection towards mammals. However he had no trouble eating Private disguised as a mammal.
- Roaring Rampageof Revenge: Goes on a truly epic one against the penguins when he escapes from the Hoboken Zoo. A herpetologist on the breaking news of Savio's escape even goes to state that his breed has a biological insatiable desire for vengeance, nursing a grudge for months before wreaking hideous retribution.
- Snakes Are Sinister: Very deceptive and sly.
- Villainous Breakdown: In "The Terror of Madagascar", Savio gets a taste of his own medicine when the baby fossa he was planning to eat uses him as a chew toy, forcing him to flea in terror screaming in fear and pain all the while.
- Villainous Glutton: Savio's most consistent trait is his desire to eat, either out of hunger or revenge.
- Vile Villain, Saccharine Show: Perhaps more so than Dr. Blowhole.
- The Worf Effect: Possibly the only villain the penguins were never able to defeat on their own. They only managed to gain an edge on him with the help of Burt the elephant, Julien, popcorn butter, and a baby fossa. Lampshaded by the penguins in "The Terror of Madagascar".
The Red Squirrel
An evil squirrel who longs to Take Over the World, but is experiencing problems getting any evil plans off the ground, mostly because he lacks Mooks.
- Arch-Enemy: To Buck Rotgut and Uncle Nigel.
- Card-Carrying Villain: Is very up front about how evil he is. In "Nuts to You," he flat out says he wants the jackpot acorns "for [his] own evil purposes."
- Diabolical Mastermind: Tries to be this but can't quite cut it, due to a combination of crippling overconfidence (his Fatal Flaw) and Wrong Genre Savvy.
- Evil Old Folks: He is very old, having been out of retirement for over forty years, but he's still quite spry.
- Expy: Of the Red Skull.
- Eyepatch of Power: Concealing the button he uses to launch his missile.
- Fantastic Racism: He despises penguins more than almost anyone.
- Gratuitous Russian: Says things like "Do svidaniya!" and so forth.
- Hair-Trigger Temper: He gets mad very easily. Often it seems like the slightest thing will set him off.
- Mooks: He has none and frequently laments the lack of them. But sometimes he forgets this, and shouts orders to henchmen who don't actually exist before remembering he's alone.
- In-Series Nickname: "Red." Begun by Rotgut and sometimes appropriated by the other penguins.
- Surrounded by Idiots: He doesn't think highly of his fellow squirrels, least of all Fred.
- Villainous Breakdown: When his "ally" Julien sells all of their acorns (intended to pay for Mooks) to buy not just magic beans, but magic jellybeans.
- What the Hell Is That Accent?: He has a vague "European bad guy" sounding accent, despite the Gratuitous Russian.
- Wrong Genre Savvy: He seems to think he's in a far more serious action thriller, but he exists in an illogical cartoon universe, and so everything he tries is doomed to failure because he approaches all his plans as if his enemies were from the same spy movie 'verse he thinks he's in, dooming himself to failure and rendering his towering intellect effectively meaningless.
A gelatinous Green Cube creation of Kowalski that nearly destroyed the world. Twice. Kowalski's attachment to Jiggles proves endlessly frustrating to Skipper.
- Attack of the 50-Foot Whatever: Eating fruit made it grow larger each time. While it never gets exceedingly massive, it does get larger than Kowalski is able to handle.
- Blob Monster: Well he's more like sentient gello than a blob but he does fit it.
- Dub Name Change: "Flubbi" in the German dub.
- Trademark Favourite Food: Eats fruit in its first appearance, and Kowalski modifies it to eat whipped cream instead later.
Incredibly intelligent chicken from Delaware
- Deadpan Snarker: Lampshaded by Private.
- Distracted by the Sexy: She was defeated because Kowalski was able to distract her with a suggestive song and dance. It happened again in P.E.L.T, but only for few seconds.
- Insufferable Genius: Blue Hen is really proud of her genius IQ and she never misses the chance to shove it in somebody's face.
- Seers: According to gorrilas, she is able to predict the future. Subverted, she just has REALLY strong strategical thinking and is good at figuring out what will happen thanks to her knowledge of physics and psychology.