At Bronze Skin Inc., coatis who prowl around the namesake company and steal its supplies are quite lovely, but nonetheless manage to be quite persuasive by more direct means.
The animal forms of But I'm a Cat Person's shapeshifting Beings include an adorable puppy and a fluffy pink rabbit. Some of their human appearances are pretty cute too.
The Trope Namer is Green Mega Man (The Mega-speaking, mega-hyperactive, mega-side kick from Captain N), from Captain SNES: The Game Masta. Even the Cynical, rude, and foul-mouthed bastard that is Alex Williams, thinks Green Mega is Adorably Badass.
While the titular character of Charby the Vampirate is stuck looking like an cute if sharp toothed kid, he took out a ship full of pirates on his ninth birthday, and has only gotten cooler since then.
Contrasts: Ahsoka's quite cute, and a formidable Jedi Knight.
Most of the cast of Digger is this. Digger herself, Ed, Shadowchild, Murai...
Lukas from DNA, is an adorable and shy furry humanoid kid who likes to draw, which he cutely pronounces "drawl". He also has super powers and doesn't hesitate to use them. Rigel, who is the only one of the kids who does not have powers, learns the hard way that bullying him is a bad idea.
Several of the younger characters in Drowtales are like this due to the way drow age at half the rate of humans, making them look like young children even when in their 20s, but Ariel is probably the best example, since in the first arc of the story she looks about 8 and has already kicked the asses of and even killed several people who've gone after her. Generally speaking even cute little kids in Drowtales can kick loads of ass since they live in a Crapsack World and pretty much have to in order to stay alive.
In El Goonish Shive, Grace is a cheerful girl who is cute in all her main forms, and she's so powerful that Shive has to jump though narrative hoops to prevent her from having a Story-Breaker Power.
Kexas from the sprite comic Kirby's Dream Adventure is a good example. Being a kirby, she's adorable by default, and she's the champion of the arena thanks to her raw physical strength and access to a permanent Crash ability. Her name even sounds like "kicks-ass".
The three main protagonists of Gunnerkrigg Court. Annie has befriended gods, Kat has somehow become a semi-divine figure to an entire society, and Renard is a body-shifting fox-demon who is easily one of the scariest things in the whole series. Annie and Kat are 13/14 years old. Renard is currently in the body of a toy wolf.
In the same vein as EarthBound, the kids from Homestuck, even the Ugly Cute Trolls. Yes, those are thirteen-year-old tykes, casually manipulating time, space and the universe itself, fighting hordes that make the Zerg look conservative and blowing up stars.(Special mention goes to Rose and Nepeta.)
Taken up to eleven with Jade's God Tier form, which gave her her pet dog's Reality Warper powers — and dog ears.
Several characters in Kevin & Kell qualify, but the undisputed champion is Coney Dewclaw. Physically a rabbit, but also half-wolf (on her mother's side). She's established to have her mother's dentition, and though she can eat both plants and meat, she definitely prefers the latter. One of the early jokes of the comic was how she could effortlessly devour slavering carnivores five times her size in a single panel. She has developed over time and age (as of 2023, she is ten years old) so she can solve her (and others') problems in a variety of ways. This also applies to varying degrees to her circle of friends.
BIP in Little Robot, Big Scary World is an adorable robot who's also completely awesome, as he helps save the humans from the darkness and enemy troopers through sheer determination, the power of friendship, and making use of his environment.
Ruby Gem, the little toddler vampire girl from Monsterful. Even more Badass when she transforms into a VSV (Vampiric Spartan Viking).
Amical from morphE is a pretty boy with soft golden curls. He is also a ludicrously powerful mage who is not to be toyed with.
Fred of Namesake. He literally exists to be a soldier and is lethal with a pair of daggers, taking down sword fighters and supernatural ghost-things alike, as well as picking up and carrying a grown woman despite being around five feet tall. He is also extremely naive, awkward and sweet, gets both excited and confused about human things like sandwiches, and is completely smitten with the girl who accidentally granted him several human characteristics. Just look at this interview. To quote a reader on that page: "Fred's so fucking cute he can say another card was destroyed in battle and all I wanna do is pinch his stupid cheeks."
The Oswald Chronicles's eponymous Oswald, a mouse with pince-nez glasses, a bow-tie and a vest. Also, enough magical mojo to go toe to toe with the greatest sorcerer alive.
Sophia Moriatos of Our Little Adventure. She is ridiculously adorable, especially given the art style, and also an exceedingly powerful sorceress who heads the Soulballo Empire's arcane training division.
More than one character in Princess Chroma falls under this umbrella, but June is the prime example, especially when she's in her Magical Girl costume while wielding a large mace.
Sluggy Freelance has had a few including Princess-Princess who is really Secret Angel Princess-Princess. Especially when she figures out how stupid that sounds out loud. Secret Cranky Office Temp could also qualify. Aylee in a couple of her forms was adorable and could either swallow you whole or burn you to a crisp. Obviously Oasis, the ultimate cutie when she's not taking out entire armies single handed. Being bat-shit insane can have her going from one to the other in nanoseconds. And then there is Bun Bun; a cute little mini-lop with floppy ears, aww. That is until you look deep into those big dark eyes and see how much you are going to suffer if you don't get out of his face right now, toots.
Sugar Bits. Bleedman is possibly the only person in the world who can make a cookie badass. And this is without mentioning Bo, the ridiculously adorable and tiny sheep... who will do this if you screw with her friends.
Arcturus Winrock from Suicide for Hire, if you think a chain-smoker who dresses like a punk and kills people for money can be cute.
Morty of Suppression is described as a walking sphere of primal, powerful magic energy. He has (in teaming up with Kirk) devastated demons much larger than him and taken out an entire row of houses after turning into a BFG. And he is absolutely adorable.
The Racconans from Tales of the Questor are an entire nation of tiny Raccoon-like humanoids... ...Nearly all of which can unleash powerful magics in self-defence, have perfected magical engineering to the point they're nearly an industrial power in an age of knights and castles, and most Racconan communities have huge militias. Add to that an attitude of combat pragmatism and an insidious cunning, and you have a nation of 2 foot tall critters that has thus far squashed every invasion thus attempted on it's territory. The Racconans could teach the Ewoks a few lessons.
The bat Titans. Easily some of the smallest Titans at barely 50 meters tall, they look positively miniscule compared to the larger Titans. However, they are still more than capable of acting as air support, being just as bold and ferocious as any Titan.
Lemony. 250 meters of genetically engineered muscle created to act as a living weapon of mass destruction and she's as cute as a bright yellow button. Her anxious, inquisitive nature and ravenous Sweet Tooth make her even more charming.
Princess Reni from TwoKinds might just be the most endearing dragon ever. She's shy, socially awkward, somewhat of a klutz, at only 20 years old (for an immortal race) quite inexperienced, is adorably enthusiastic about her hobby of collecting minor magic artifacts or the prospect of adventure, and has a distinct tendency to have her private thoughts leak out via the telepathy that all dragons use to communicate, usually to embarrassing results. However cutely awkward she might be, though, she's still a frickin' dragon. Even a juvenile dragon is several tons of flying, fire-breathing clawed and scaled menace with more magical potential in her pinky claw than most mortals could ever dream of. Untrained and inexperienced or not, she can still teleport, breathe fire, shapeshift, heal, read minds, put you to sleep with a single touch of her claw, and punch through solid stone walls. It is not a good idea to piss her off — as the wolven terrorists attacking Edinmire found out — even if she is a klutz who routinely bumps her head on doorways.
Platypus from Vinigortonio may look like an ordinary platypus but can actually hold his own in a fight and even infiltrate the police department without being noticed.
Jack Hawkin from Zokusho Comics is a foot shorter than anyone else on his team and considerably younger. He is obviously extremely pleased by a simple compliment on his chess playing abilities. Just a few pages later he's calling down lightning to fry the enemies he isn't just setting on fire.
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