Tommy: Cancelation - Tommy can not be effected by any quirk, including mutation quirks. If a quirk effects something else and that object hurts Tommy, than he'll be effected, but that's about the extent. Also, fabric can also cancel out his quirk, and by that I mean the other person has to be wearing thick gloves just to touch him if they have a mutant type quirk.
Tubbo: Goat - Tubbo is just a mountain goat. He has the hindquarters of a goat, the underside of his hands are covered with something akin to his hooves, he has goat eyes, he has horns, he has ears, he can eat more stuff than the average person, and he can jump very far/high. He's not very effected by long falls if he lands on his hands and hooves but there is always a limit.
Ranboo: Enderwalk - In situations of intense emotion, Ranboo will lose himself and gain all of the memories he's forgotten until he's calmed down. This shift also causes a small boost to his strength, agility, speed, and durability. He will not remember anything from this state when he comes back to himself but during the time, he's still completely in control, he just acts how he would if he always had all of his memories.
Technoblade: Barbarian - The stronger his emotions, the more powerful he gets, his strength, agility, speed, and durability all getting a boost based on how strong of an emotion he's feeling. This is also why he has voices in his head, to fuel his emotions and cloud his head to make decisions that would get the biggest reaction out of him.
Wilbur: Phantom - He can choose if his body is tangible or intangible at any time, and after all of his practice he can mix those two states of his being. However, whenever his phantom for passes through something it leaves behind a blue residue that stains anything it touches, which is said to be calming to the touch. He can also make other objects intangible as long as they are not a living being.
Philza: Crow - He's literally a crow. That's it. He has shiny, black wings and everything. More specifically, he has wings that let him fly, talon-like nails, sharp eyesight, and a natural love of shiny things.
Jschlatt: Goat - He's not as much of a goat as Tubbo is, but he's still a goat. He has the eyes, ears, and horns of a goat, as well as the hoof texture on the bottoms of his hands and feet.
Dream: Invasion - He can teleport to others if he knows their full names. He can also read minds but he can't really control that part. If he can see your face, he can read your thoughts.
George: Sweet Dreams - Whoever he touches falls asleep, the quirk lasting longer depending where he touches. The face is the most potent, for lack of a better word, because the brain is where dreams are created. However, clothing is a very effective way to evade his quirk.
Sapnap: Fire - He's basically a pheonix. He can create and manipulate any fire, being immune to heat as well. He can also heal himself with fire, though it's more like a really fast ice pack or bandage. However, he can't handle the cold. He's trained up his tolerance but he can still freeze much quicker than other humans and at much higher temperatures.
Quackity: Probability - He can see the probability of anything and everything he thinks of. He usually uses this to predict what's going to happen and how to get out of sticky situations. With everything he gathers he can have all the facts in front of him for any given situation.
Karl: He can remember anything and everything. Problem is, he can't remember anything about himself, so he has to write everything down, from his name all the way to his relationships with other people.
Jack Manifold: Immortality - He can't die. Straight up, he can only die of old age. Even if you separated his head from his body, they will find each other again and connect, no matter how long it's been. He dies, his life is basically just on pause until he comes back. Of course, it takes time to come back but he always will.
Skeppy: Size Shift - His height can range from his normal height to an inch tall. It makes him a very effective escape artist if he covers his gem protrusions.
BBH: Demon - He's literally a stereotypical demon. Black fur, claws, ability to teleport, ability to float, resistance to heat, sharp teeth, horns, tail. But besides that, that's really where the resemblance ends.
Foolish: Lightning - He can control thunder clouds, to an extent. He can create them or summon chunks of them to strike where he points. It does have to charge up, depending on the size and amount of clouds, but they pack a solid punch that could kill someone if he's not careful.
And that's all I have for now! I hope you enjoyed and I will probably bring you some Ranboo and Michael plot soon.