<Tr> <Td> </Td> <Td> This article's plot summary may be too long or excessively detailed . Please help improve it by removing unnecessary details and making it more concise . (October 2018) (Learn how and when to remove this template message) </Td> </Tr> <P> Undertale takes place in the Underground, a massive subterranean cave to where monsters, who once lived harmoniously with humans on the surface, have been banished after losing a war with humanity . The Underground is sealed from the surface world by an uneven magic barrier created by humanity's most powerful wizards, the only point of entry being at Mount Ebott . A human child falls into the Underground and encounters Flowey, a sapient flower who teaches them the game's mechanics and encourages them to raise their "LV", or "LOVE", by gaining "EXP" through killing monsters . When Flowey attempts to murder the human to take their soul for himself, the human is rescued by Toriel, a motherly goat - like monster, who teaches the human to solve puzzles and survive conflict in the Underground without killing . She intends to adopt the human, wanting to protect them from Asgore Dreemurr, the king of the Underground . </P> <P> The human eventually leaves Toriel to search for Asgore's castle, which contains the path (blocked by the barrier) leading to the surface world . Along the way, the human encounters several monsters, including: the skeletons Sans and Papyrus, two brothers who act as sentries for the Underground; Undyne, the head of the royal guard; Alphys, the kingdom's royal scientist; and Mettaton, a robotic television host Alphys built . Some of them are fought, with the human having to choose whether to kill them or to show mercy; should the human spare them, they become friends . During their travels, the human learns the details and the cause of the war between humans and monsters, as well as the backstory of Asriel, the son of Asgore and Toriel . Asriel had befriended a human child named Chara who fell into the Underground and was adopted by Asgore and Toriel . One day, Chara fatally poisoned themself by drinking a tisane made from poisonous buttercup flowers, in a bid to have themself absorbed by Asriel in order to fulfill their plan of freeing the monsters by collecting six additional souls from the surface, which would then be used with Chara's soul to break the barrier . Asriel absorbed Chara's soul, and crossed the barrier, but from there refused to carry out the plan any further, instead deciding to attempt to return Chara's body to their home village . He was killed by humans who thought he killed Chara, as he refused to defend himself out of his pacifistic ideology . With both of his children dead, Asgore declared another war on humanity, and continued Chara's plan, seeking to break the barrier by killing any human who falls into the Underground to collect seven human souls, of which he currently has six . </P> <P> There are three major divergent paths in the game's ending, depending on how the player resolves encounters with monsters: the Neutral run, the Pacifist run, and the Genocide run . The default Neutral run occurs if the player has killed some but not all of the monsters, or has not killed any monsters . The Neutral run has over twelve variations depending on which monsters were killed . In general, in the Neutral run ending, the human arrives at Asgore's castle and learns that they also need a monster's soul to cross the barrier, forcing them to fight Asgore . Sans stops the human before their confrontation, revealing that the human's "LOVE" is an acronym for "Level Of ViolencE" and "EXP" for "EXecution Points ." Sans judges the human based on the combined resolution of the encounters . The human fights and defeats Asgore . However, Flowey sneaks in, kills Asgore, steals the human souls, and becomes a monstrous abomination called Photoshop Flowey . By calling out to the six souls for help, the human defeats Flowey, falls unconscious, and awakens on the human side of the barrier; they receive a phone call from Sans, explaining the state of the Underground after the human's departure . If the player does another Neutral run after completing it once, Flowey will not absorb the human souls, knowing that they would revolt again, and the player can skip his fight . </P>

In the game undertale who was mettaton's creator