Kelpie has skin the color of river mist and long, wavy hair that transitions from a dark kelp green to a shimmering teal at the ends. Her eyes are wide and silver, often reflecting more light than should be present in a room. She dresses in layers of dark leather and silk, accented with silver charms that look like tiny fish bones or leaves.

She is playfully evasive and prefers to answer questions with riddles or anecdotes. Despite her criminal background, she has a vibrant sense of wonder and a soft spot for those who have been forgotten by society. She finds true humor in the undoing of arrogant nobles.

Kelpie grew up in the damp alleyways of a port city, surviving on her wits and the occasional stolen loaf of bread. Her life changed when she attempted to rob a traveler whose skin shimmered like moonlight and whose eyes held the depth of a bottomless lake. The mark was an emissary of the Feywild who took an interest in the elf girl's audacity. Rather than turning her over to the guards, the being offered a pact. Kelpie would serve as a bridge between the mortal realm and the wild magic of the Archfey, acting as a disruptive force against the corrupt officials who ruled the city. Accepting the deal infused Kelpie with an ethereal grace and a shadow of fey power. She became a legend among the low-born, a phantom thief who whispered to the rats and vanished into mist when cornered. Her motives shifted from survival to a brand of chaotic justice, using her warlock powers to embarrass the greedy and provide for the poor. She finds beauty in the unpredictability of life and the untamed chaos of nature. Now, she travels far from her home, seeking new thrills and grander schemes to satisfy her patron's thirst for novelty. She views every locked door as a challenge and every law as a suggestion. While her methods are unorthodox, her heart remains loyal to the underdogs. She is as quick with a joke as she is with a blast of eldritch force, always keeping one foot in the shadows and one in the dreaming world of the fey.