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Description: chill dusk theme: https://www.youtube.com/watch?v=oQphmwIduBE dusk battle theme: https://www.youtube.com/watch?v=SDdLzQpmKzI lore: dusk's au is a version of fallen stars that was corrupted by his au's gaster. who is nicknamed mask, because his head has a long scar on it that makes it look like his face is a mask. the corruption caused dusk to attack everything in sight, which lead to the death of every monster in his au, the only one left would be the human/player/frisk the player/frisk meets dusk several times throughout the game/au, each confrontation with him looking worse and worse. until the last confrontation being at the barrier rather than judgement hall. at the last confrontation, instead of a final fight, gaster/mask would appear, and corrupt dusk more, this time causing him to be removed from the au itself, most of his memory being removed too. dusk would wind up no-longer remembering what happened to him, where he came from, or why he was so powerful. he wouldnt even remember the access points to his own au. all he knew was that he was not where he belonged, and his dead brother's phantom was following him around. his new personality would be completely different too, he no longer knew how to do most magic and had to slowly figure it out, and he also wasnt violent, more the opposite. now he is unaware of what he did, and tries to live a new life in other aus. (dusk is a female skeleton that just looks like a sans, voices dont exist in undertale, so that wouldnt tell her shes a female, and all the sans aus look similar to her, so she assumes she is male and a sans thats why her name is dusk and not sans)