Ruby Thursday, also known as Thursday Rubinstein, is a member of the villainous team called The Headmen, who are known for their bizarre and twisted experiments, with her having a sphere-shaped computer for a head. Ruby is extremely intelligent and cunning and is also shown to be a skilled strategist and manipulator, able to outsmart her opponents with ease. Despite her villainous tendencies, Ruby has a strong sense of self-preservation and possesses a dry wit and sarcastic sense of humor.