DSMP au where everyone can change appearance based on mood.
Philza’s outfit switches from his happy jolly green to a deep depressed blue and the others know he must be thinking of past love they’ve learned his colors and moods quickly to not anger the immortal man.
Karl’s hair transforms from pleasant calm brown to magical mystical rainbow as he remembers his loved ones when he sees them and when he shows up with almost black or pale white hair they wonder where he’s been that brought it on.
Eret’s being shifts from boisterous bold boy to grinning gleeful girl when they get overjoyed seeing their friends prosper, and right back when they remember their original betrayal, some days he relives being king crown adorning him and others she relives tragedies.
Tommy’s height alters from powerful delightfully tall to shrunken timidly small when he is reminded of his misguided moments, when he’s drunk on power he is as large as can be, but when exile is remembered the others might not see him for days, his size so small he hides on one of shrouds legs.
Antfrost’s eyes modify from a clear peaceful blue to a terrifying deep red when anyone threatens those he holds closest, the beginning of the SMP was when his eyes were the clearest blue and when it all went wrong they started to change only going full red after the egg because even then he knew the threat.
Dream’s smile transfigured from seemingly unsuspecting serene to terrifyingly overbearing menacing when his true nature comes out in the middle of a monologue, he never seemed to have that terrifying grin around George, the others hadn’t been so lucky they had seen it first hand in the vault.
Nikki’s locks morphed from peaceful, almost plain blond to bold bright pink when her anger flared at the stupidity of others, when she had found this place she was so young and blond and in the short time she’d lived she’d gotten angrier her hair growing pinker and pinker.
Sam’s form expands from solid strong steady to large shimmering pulsing when his prison is under attack, even going so far as to explode on one he loves, he knew it wasn’t right to attack Ponk he did but his prison was his priority and that trumped all even love.
Foolish’s skin changes from glimmering, gorgeous golden to silky, sad grey when he’s away from his summer home for too long, spending all of his time building for others made his skin dull grey and it takes others a bit to notice before they give him good and they see him start to shine again getting his color back after he adds their riches to his collection.
Sapnap’s arms convert from plain peachy clear to burning vibrant flames when he’s mad, his anger and protectiveness showing clearly on them, he was glad he had BBH there when it happened the first time his anger at the man forgotten as he panicked when he became inflamed.
Wilbur’s hair streaked white from death occasionally goes blue when his memory of past life emerges for seconds before flickering back to white, it’s only happened when he was alone which he was unhappy about because he knew it would cause others pain and he wanted that.
Hannah’s floral accoutrements went from pink to red as protective instincts filled her body, she hadn’t known they could shift red until the egg, until she had to protect herself and her friends at any cost even betrayal.
George’s shirt shifts from a sky blue shade to a sunny yellow when thrilled and a vibrant green when he feels loved, not that he can actually tell so he doesn’t realize even though the others do, no one tells him the color is love is the same as Dream’s body.
Ranboo’s eyes mold from a vibrant green and a relaxed red to both deeply deadly purple when those he loves are attacked, even the mention of his sons name on Sapnap’s lips cause them to flare as he prepares to attack it’s only the calming touch of Tubbo that stops him from ripping the other man apart and his eyes to shift back.
Ponk’s mask subtlety transformed, the colors staying the same but the pattern just slightly changing with his mood, since Sam’s attack it showed his sadness at the action and even so when he saw Sam or Foolish it moved to have a heart on his forehead because he felt loved.
Puffy’s coat rotated between a plethora of colors, red when joyous, blue when sad, violet when protective, green when calm, rarely calm it was almost never green but she lived almost always in red happiness in her body though it did go blue when she thought of Dream, of Tommy, of Foolish her boys.
Charlie’s entity transmutes from goop to a semi human being when he remembers to try and fit in, he doesn’t know much and yet he also knows it all, smart beyond his existence but trying to hide it as best he can.
Quackity’s face held scars that he could bend and move at will, he preferred his current look the one that fit his vengeful mood best a long scar crossing his now blind eye because of Technoblade and his pickaxe.
Callahan’s antlers and nose vanished when he was overly happy and reappeared when his friends call him out for it because of his sadness, the first time it happened George, Sapnap and Dream were all there and he grew flustered them coming back quickly because the others made fun of him.
BBH’s form ever changes his natural giant demon form shrinking to a more acceptable human size when he feels serene, he had spent too many years in his demon form while roaming and then dealing with Sapnap but often lived in his human size now happiness found with friends and family.
Tubbo’s horns grew when he was happy and shrank when he was sad, they most often were a medium length because he was most often both happy and sad unable to fully feel one emotion or the other and when he was angry they curled as they grew something that had really only happened a few times before.
Technoblade is a bit of a secret from the others, Philza being the only one who had seen it before, he had been shocked to come home one day and instead of his piggy friend found a lanky human wearing his clothes and using his vernacular it’s only when Philza questions it that he changes back never showing it again.