Lisa

Lisa (リサ, Risa) was once a Doctor working for the Marines and was one of their greatest doctors known, however, due to her unstable mental state later discovered through her obsession with helping people to the point of insanity and conducting human experiments on lower ranked Marine soldiers who she couldn't heal and thus used them as experiments to try and find means to know how to deal with it.

She later escaped after the discovery of her inhuman experiments and was given a bounty of 120,000,00, her unstable mentality and the experiments she was committed on Marines gained her the title Devil In Nurse's Clothing (看護服の悪魔, Kango Fuku no Akuma). At some point after leaving the Marines she became the doctor of the Azalea Pirates in order to accomplish her dream of finding the cure to every disease through any means.

Trivia

 * Lisa's appearance is based off Hato Tsurubami from Medaka Box.