c[3] is the younger sister of Boa Hancock, the ruler of Amazon Lily. She is also one of the second-in commands of the Kuja Pirates and the older sister of Boa Marigold. She and her sisters are referred to by the Kuja as the Gorgon Sisters.[1] Sandersonia is a large woman who resembles a snake, with a curvaceous figure and large breasts like her sisters. Her head is disproportionately large and wide to her body and her long tongue is forked, often sticking out of her mouth and has sea green eyes (amber in snake form).

Like the rest of the Kuja, she dresses in very revealing clothing: a green bikini top with white irregular patterns, a white cape over it and green panties encircled by flaps at both sides of her hips. She wears brown boots and a green stocking on her left leg with a design which resembles the Kuja Pirates' Jolly Roger.

She is usually seen accompanied by the large panther, Bacura, at her side instead of a snake like the other Kuja. Along with her sisters, her beauty is highly admired by the Amazon Lily islanders.[1] In her younger days, Sandersonia was an average height teen who wore orange skirt and green top.[5]

Sandersonia wore a tan bra that seems to be bandaged of some sort, after her clothes were burned during the fight against Monkey D. Luffy.

At Rusukaina, Sandersonia’s attire does not change, with the exception of her cape and the designs of her bikini, which take the form of snake scales.

On her back, covered by her cape and her long green hair, is a mark of slavery branded on her by their previous Celestial Dragon masters. It resembles a hoof mark and is a sign that means that she is "less than human" since she was a slave. Her sisters share this mark as well on their backs.[6][7] Sandersonia appears very fond of her sister Hancock, as noted by the fact she laughed at her sister's "twisted" personality. While she appears to be living on the lie that her sisters and herself defeated a Gorgon to gain their curse, at the same time, she has not actually told a lie herself, unlike Hancock.