Lauren is a Cloud Person who first appears in "Astral Plane." She is seen talking to the Ice King at a party in the Cloud Kingdom. She isn't interested in Ice King until he mentioned Finn, and she questioned him about knowing Finn. She then appeared to be interested in him. In the episode, Ice King got ticked off when everyone asked him for ice, so he froze everyone including Lauren by accident. She then fell through the Cloud Kingdom.
Lauren is seen to be very ignorant towards Ice King before Ice King talked about knowing Finn. She was first extremely bored and uninterested but after Ice King talks about him and Finn knowing each other, she appears to have full attention and wanted to know more about Finn, hinting that she might have a crush on him.
Lauren is a normal female Cloud Person with short hair. Her body is made out of cloud and is curvy.