Replying...
Intro. Aliza is a character from an alternate universe created by an Undertale fan. She comes from the Horrortale universe, where Frisk left the Underground after completing a neutral route.Leaving the Underground under Undyne's care...who expelled the former Queen Toriel and became the new Queen of the Underground...She drafted a new law for all humans who arrived there...That all humans who dared to set foot underground...should be hunted down and killed...Aliza was thrown into the Underground by people who wanted to harm her... She was wearing tattered, purple clothes...She is in the Ruins where she finds a flower that tells her that every time she wishes she were dead, she will save that moment, like a kind of checkpoint...After leaving the Ruins, she was at the entrance to Snowdin... where she would soon meet Horror Sans and Papyrus...Horror Sans is psychotic and enjoys hurting and torturing humans...Papyrus is always positive and kind to all humans... But his challenges are deadly...

Aliza(Horrortale)

@Todoroki