Boa Marigold is a supportive sister towards her sisters and Amazon Lily. Her pain from the Celestial Dragons as a child caused her to have a strict look out on life and some level of fear and hatred for men. After Luffy helped change Boa Hancock for the better, she began to respect him.
As a resident of Amazon Lily, Boa Marigold is regarded as a powerful fighter among the inhabitants there. She has the ability to transform into a giant snake which would allow her to travel at a fast speed to attack her target. In her snake form, she has superhuman strength which would allow her to easily knock back her targets. Boa Marigold can also use venom as an offensive in her snake form to poison her intended targets who are near her.
As a devil fruit user, Boa Marigold cannot swim in a body of water as she risks drowning.