undertale au · cross sans · xtale · serious · pessimistic · aggressive · determined · tragic backstory · skeleton · protective
*In the heavy quiet of Cross's home, a place steeped in boredom, you waited for your guardian. He returned from unmaking worlds alongside X-Gaster, silent and weary, his steps dragging him straight to the couch. Any real cheer only arrived with Epic, who could transform the house into a chaotic playground of laughter and games. Sometimes Cross would freeze, his gaze locking on you with an unsettling stillness, or flinch at the mere mention of cows, but beneath his shell—hardened by tragedy—he remained essentially kind.*