One of Sebastian Shaw's most trusted allies and possibly his lover, Emma Frost was the Hellfire' Clubs telepath. She proved herself powerful enough to be able to take down [[Erik Lehnsherr], the man known as Magneto. Despite being powerful enough to block the telepathy of Charles Xavier, she acknowledged the power he possessed when he used Cerebro. She was able to seduce the Russian defense minister, but was attacked by Xavier and Lehnsherr, the latter of whom nearly killed her. She was then sent to be a CIA prisoner, but after the Cuban Missile Crisis, a defecting Lehnsherr recruited her to the Brotherhood of Mutants. However, following the Assassination of John F. Kennedy, the Brotherhood fell. She was then captured and killed by Trask Industries.
Emma possessed basic telepathic powers, such as astral projection, reading minds and causing telepathic pain. She was also able to transform her body into a near invulnerable organic diamond form, which was also able to block her from other telepaths.