Cartoon creatures are almost always adorable, even those based on unpleasant animals. Remy from Ratatouille (2007) proves that sewer rats can be endearing as long as they're animated the right way. On the other hand, Ren Höek from Ren & Stimpy seems like a chihuahua's worst nightmare.

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That said, cuteness lies in the eye of the beholder: a fair bit of subjectivity is involved when evaluating a cartoon creature's appearance. Further, lovability isn't limited to looks — there are several creatures who may not look very charming but nevertheless endear themselves to viewers.

10 Everything About The Ro-Bear Berbils Screams Cute — ThunderCats

Robear Berbils

The Berbils are an adorably tiny species of bear-based robots originating on the planet Ro-Bear. They have since integrated into life on Third Earth, where they basically farm the land and cook an array of delicious treats, such as bread fruit, meat fruit, candy fruit, and veggie fruit.

Nearly everything about these creatures screams cute, especially their helpfulness and compassion towards the ThunderCats. In fact, the legendary Tower of Omens would have never been constructed with Berbil assistance. Ro-Bear Belle and Ro-Bear Bill are honored for their hard work with League membership.

9 Penelope Pussycat Is Sweet And Innocent For The Most Part — Looney Tunes

Penelope Pussycat

Pepé Le Pew's "love interest" didn't even have an official Looney Tunes name for forty years, until "Carrotblanca" finally titled her Penelope. All she wants is a quiet lazy life filled with lots of milk and fish, but is forced to spend her time evading the erotic affections of a French skunk.

Unfortunately for Penelope, she somehow ends up with a white stripe on her back, which Pepé uses as an excuse to chase her. Penelope is sweet and innocent for the most part, although there are a few episodes in which she begins pursuing her would-be paramour.

8 Perry's Adorable Appearance Clashes Hilariously With His Combat Prowess — Phineas & Ferb

Perry the Platypus in Phineas and Ferb

Perry is introduced as the Flynn-Fletchers' household pet, who believe him to be an ordinary platypus. However, this is revealed to be Perry's undercover identity. Unbeknownst to Phineas & Ferb, he works as a spy for O.W.C.A., an animal-themed intelligence agency.

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Perry's design is relatively simple because the creators "tried to create characters that kids would easily be able to draw themselves," but his bread-loaf shape and lopsided eyes are extremely cute. Perry's adorable features hilariously contrast with his incredible combat prowess.

7 Despite His Badass Reputation, Monkey Is Playfully Lighthearted In Nature — Dexter's Laboratory

Monkey

Dexter believes his lab animal will "never become anything more than a mere monkey," completely oblivious to the fact that Monkey has incredible abilities at his disposal. In fact, he is widely recognized as the most powerful superhero in the world.

Agent Honeydew often relies on Monkey to save the planet from monsters and natural disasters, a job he fulfills without fail. Further, he prefers peaceful resolutions over violence, demonstrating his heroic personality. Despite his badass reputation, Monkey is rather lovable, as shown through his lighthearted and playful nature.

6 Steven Jr. & Steven The Third Are Extremely Lovable Mountain Goats — Steven Universe

Steven Jr and Pearl

Steven Universe falls in love with everyone he meets, which is what makes him such an endearing character. When he comes across a random mountain goat in "Giant Woman," he calls it "a magical goat guardian" in hopes that Pearl and Amethyst will fuse into Opal.

Steven promptly adopts the creature and names him Steven Jr. The mountain goat is rather friendly, even if he continuously tries to eat everything in sight, including the precious Heaven Beetle. Steven Jr. eventually has a son of his own, named Steven the Third, who is even more lovable.

5 Pluto's Non-Verbal Communication Style Is Nothing Less Than Charming — Mickey Mouse

Pluto

Mickey Mouse's adorable mixed-breed pet Pluto debuted in The Chain Gang, where he was designed to look like a bloodhound. Pluto is considered to be a part of Disney's "Sensational Six," along with Donald, Goofy, Minnie, Daisy, and Mickey.

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A number of short films starring Pluto received Oscar nominations, with Lend a Paw (1942) winning. His non-verbal communication style is not only charming, but it also helped develop the burgeoning field of character animation. Pluto is obedient, gentle, awkward, faithful, and somewhat intelligent.

4 Nibbles Is A Cuddly Orphan Mouse Who Occasionally Lapses Into French Songs — Tom & Jerry

Nibbles

Tom & Jerry have always been locked in the eternally clichéd battle between cat and mouse. Viewers encounter many other characters over course of the series, including Spike, Butch, Toodles, and the thoroughly endearing Nibbles. This cuddly orphan mouse is almost always seen wearing a diaper, indicating that he's still a little baby.

Nibbles plays Jerry's nephew and usually helps his uncle push back against Tom. He occasionally speaks French, and in one episode, delivers an entire monologue in Old English. Nibbles enjoys eating more than anything else — there is nothing in the world capable of stopping him when he's hungry.

3 Thing Does An Adorable Job Of Expressing Its Emotions Through Finger Movement — The Addams Family

Thing

Thing is a disembodied hand who performs a wide variety of tasks for the Addams Family, such as lighting Gomez's iconic cigars, making wine, flipping vinyl records, and acting as a substitute TV remote control.

Nobody knows anything about its origins, except that Thing has been an essential member of the household for decades. For a character with no face, it does an adorable job of expressing its emotions through finger movement. Its full name is Thing T. Thing, but the T also stands for Thing.

2 Gary Is Arguably One Of The Cutest Cartoon Characters Ever — SpongeBob SquarePants

SpongeBob's pet Gary the Snail

SpongeBob's sea snail Gary is arguably one of the cutest cartoon creatures ever, despite his inability to speak. However, he meows like a cat and plays fetch like a dog. Over the course of SpongeBob SquarePants, Gary cultivates a unique personality, consequently increasing his popularity with the fandom.

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Gary apparently wears shoes but continues to trail slime behind him, which makes no sense (like so much that happens in SpongeBob SquarePants). Interestingly, Gary is smarter and wiser than most characters on the show.

1 Momo Is An Iconic Comic Relief Cartoon Creature — Avatar: The Last Airbender

7 momo from avatar with the waterbending scroll

Momo's presence is central to Avatar: The Last Airbender. He is extremely curious, smart, and a major credit to Team Avatar. Momo cannot communicate with humans, but he has no problems exchanging information with Appa, illustrating his close relationship with the Sky Bison.

Momo is an iconic comic relief character — his interactions with Sokka form a major part of the show's slapstick humor. In addition to his adorable hijinks, he is also known for his tenderness and empathy. Fans love nothing more than watching Momo devour any fruit he can find.