Martha was shown to be kind and welcoming to Ragatha and Gangle, even showing good manners towards Jax referring to him as Ragatha and Gangle's friend. Despite being killed by her own husband, she doesn't seem upset about it, claiming men have the silliest priorities, and believing her husband makes monologues about short stories.
Martha appears as mostly aqua-like cyan. Only the top half of her whole appearance has been shown so far, but she has hair that goes down to slightly above her.