Because I see a lot of people giving trolls their own stylized design and with a simi-au in mind I decided to take a crack at it, with some notes
Branch while gray was unable use hair camouflage or use his hair as easily so while still building the bunker (which took until he was 11) he needed other ways to defend himself ala manually sharpening his teeth and making gloves that give him claws due to pop trolls having rounded teeth and no claws or nails to speak of so Branch at a young age took matters into his own hands.
Being exposed to predators before the bunker was finished Branch stayed in a small and cold cave for shelter and made him need to fight and find ways to keep himself safe, as a result he got many scars from fighting and even killing predators, his oldest and now most sensitive scar is a large, deep claw mark on his back only hidden by his vest, he doesn't like looking at it, closes his eyes getting dressed in the mirror and he tends to freak out a little if someone touches his back where the scar is.
Branch being gray and colorless for so long had the side effects of him having patches of gray in his fur that will never fade, because he will never be the same troll he was before losing everything, including his colors, he can mentally recover and be in a better place, but he will always be deeply affected by it.
While Branch sharpened his teeth to be big and sharp, his brothers only have sharp canines, like fangs, John Dory's is only a little sharper and a pale comparison to Branch's teeth that would put a beartrap to shame.
Raising himself near the kinda comically dangerous Pop Forests, Branch's feral survivalist lifestyle still has an effect on him though since getting his colors back he tries acting 'normal' in front of other trolls, Poppy preferrs it when he doesn't pretend though; the animalistic behaviors and survivalist mannerisms is part of him and Poppy loves every part of him.
Troll tails are long and prehensile, though they can't stretch it or change color like their hair, it can be used to balance on the trees and used for swinging in forests, it can also be used to hit smaller predators with enough strength, as far as the pop troll tails go at least, it depends on the genre of troll though the tail texture will also matter on how its raised and around what sort of trolls, this is where my poprock Branch hc comes in, still having the dip the pop tail does, but with thinner fur.
Branch actually didn't take too much care of his fur while gray, making it shaggy, coarse, and not as fluffy as pop fur should be like Poppy's he is trying to take better care of it now as a form of learning self care, Branch has thicker fur due to not bothering to trim it not seeing the point.
Troll antlers are hard as stone, but they are less durable and strong when trolls are children, its for this reason Branch's antler broke when he fell from the troll tree when he lost his grandma, troll antlers don't grow back, they do not shed, Branch's antlers will always be like that, troll antlers are usually used for scaring predators that are smaller than them or rubbing antlers with a significant other as a form of intimate acts of affection.
Branch grew up not really eating a regular meal due to surviving on his own, it stunted his growth a bit, making him shorter than he probably would've been at his age now, Poppy being taller, Branch's head (minus hair height) is about to her chest as a result.
