Muret is a curvy female with her hair tied up in a bun, with one part going down. She is wearing a tight-fitting, cleavage revealing yellow outfit with a zipper running down the middle and boots decorated with crosses. She also seems to have a tiny mole or freckle under her left eye.
As a member of Bellamy's crew, Muret appears to think highly of Bellamy's and Sarkies' strength. She has almost no interactions with the crew, however when Nami refused Bellamy's offer to buy her off the Straw Hat Pirates, she had been the first to laugh at her response. After Bellamy's defeat, Muret showed her cowardice, refusing to take action against Luffy even when the Straw Hats took all the gold that Bellamy stole.
Muret has not demonstrated much in battle. However, as the Bellamy crew's doctor, her talent may lean more on first aid and medical treatment rather than direct confrontation. And being the crew's physician, she presumably made the bandage around Bellamy's head that was seen when Doflamingo came to Jaya to punish him. It is unknown how advanced her medical skills are.
After Doflamingo defeated Bellamy, Muret would travel with the Bellamy Pirates to a Sky Island. It is unknown what became of Muret and the rest of the Bellamy Pirates when their captain forfeited his captaincy to join the Donquixote Pirates.