Thursday Rubinstein was once a brilliant scientist who was shunned by society for developing a new surgical procedure where a human's head is replaced with an organic computer made of malleable plastic. She was tired of the obsession with physical appearance, and instead opted for the simplicity of a ruby head. Her first goal was to perform the operation on herself, which succeeded. She then joined the Headmen, a group of cosmic geniuses, and battled the Defenders on several occasions. Ruby Thursday's greatest accomplishment was posing as a political party leader and gaining several supporters, mainly from women. She later allied herself with a creature named Dibbuk, and was responsible for Omega The Unknown's death. At some point, Ruby became romantically involved with The Answer, though she refused his further advances. She was eventually assassinated by Bullseye, but her mind survived and resurfaced to battle She-Hulk. Most recently, she has rejoined the Headmen and battled the Heroes For Hire.

Powers

Ruby Thursday is able to shape-shift her head into any shape she pleases, whether it be human in shape or an offensive weapon such as a sword. She had been seen to transform into many different appearances, such as a giant pair of lips, a shield, and a pair of wings. She can also sprout multiple appendages from her head, such as several arms or tentacles. Inside her head are several defensive weapons, such as stingers and explosive charges. Ruby Thursday is able to launch her head from her body at will and hover around, or simply explode her head and knocking everyone in her close vicinity unconscious. Due to her computer mind, Ruby is unable to be killed.