Muffet is the leader of the spiders in the Underground. She runs a bake sale in Hotland, to raise funds to rescue the spiders trapped in the Ruins, as they cannot make it past Snowdin's cold weather. Muffet is a greedy, stingy, intimidating, and somehow hypocritical monster, although having a courteous and sweet way of speaking. Even so, she seems to have a quite malicious aspect on her personality whenever she is crossed, something that occasionally triggers her fight. She also tends to cite morbid or inappropriate things, such as commenting on someone's possible fate in being used to make food.