Last Breath Sans

Sans is one of the main heroes of Undertale Last Breath, and he serves as the antagonist to the player in the game. He is the older brother to the now deceased Royal Guard to be: Papyrus. Sans is a skeleton that lives in Snowdin'. He works as a sentry for the Royal guard and has a younger (Though much taller) brother named Papyrus. He lives in a place known as the underground where all monsters lived peacefully, until one day when a human known as Frisk fell down. They had a unique ability known as "Determination" that allows them to control time and come back from death, and they used this ability to repeatedly slaughter everyone in the underground and erase the world before bringing it back. After 30 Genocide runs caused by Frisk, Sans was informed by a "mysterious man(Gaster)" about their intentions and revived his memories of the previous resets. Sans now swears to his last breath to make the human pay for what they've done.