No-Girl

Little is known about Martha's past. As a teenage mutant runaway, Martha was captured by the human supremacist group, the U-Men. Their founder John Sublime had her brain removed from her body, keeping the disembodied brain alive in a capsule. Sublime controlled her through drugs and syringes, and used her to subdue his opponents. He used this method against the two X-Men, Cyclops and Emma Frost. The pair eventually broke free of her control, and liberated Martha. After gaining her freedom, Martha then took her revenge on Sublime by causing him to fall to his apparent death.

After Martha was freed, Cyclops and Emma enrolled her in the Xavier Institute where she became a member of Xorn's Special Class. Fellow student, Quentin Quire invented a special hovering case to hold Martha's brain. Martha seemed to have developed a friendship with Ernst, a super-strong mutant whose appearance resembled an old woman, who often pulled Martha's case by a chain and repeated Martha's telepathic communications.