Mabel Pines is a fictional character from the animated television series Gravity Falls. She is the twin sister of Dipper Pines and is known for her cheerful personality, creativity, and love for colorful sweaters. Mabel is adventurous and often seeks fun experiences, making her a central figure in the show's various mysteries. In the series, Mabel spends her summer with her brother at their great-uncle Stan Pines's Mystery Shack, a tourist trap filled with oddities. Throughout the show, she showcases her talent for crafting and her optimistic outlook, often balancing Dipper's more serious demeanor.