Adam Kane (John Shea) is the strategist and moral center of Mutant X. Chief biochemist of the scientific experiments that led to the creation of the New Mutants, Kane created Mutant X to atone for his mistakes. The group seeks to protect New Mutants and help them control their powers. Viewing the New Mutants as his responsibility, Kane is looking for treatments for their various conditions. To this end, Kane has stolen The Creator's database, which can be used to track other New Mutants. In the end of the series it is revealed that Adam is actually a clone of The Creator.
Shalimar Fox (Victoria Pratt) is a recombination of human and animal DNA – a Feline Feral – giving her great strength, speed, leaping ability, agility, reflexes, glowing cat's eyes, and enhanced senses. Fox often confers with Adam, who had found her starving and frightened in a sleazy motel. After further mutation, she can feel incoming danger to herself like she has eyes at the back of her head. Like all Feline Ferals, Shalimar is extremely territorial and has heightened fear of fire and she is immune to the form of hypnosis.
Jesse Kilmartin (Forbes March) can alter the density of his body at will. Kilmartin is the only known New Mutant to have surpassed his "expiration date." As a Molecular New Mutant, he can become intangible (though for no more than a minute, or risk not being able to reintegrate), or super-dense, making him nearly impervious to harm (though he can only maintain that form for as long as he can hold his breath). He also can manipulate gravity to some extent, and render other people or objects intangible or super-dense through physical contact by holding his breath for as long as he can.
Brennan Mulwray (Victor Webster) is an Elemental Electrical with the ability to generate enough electricity from his body to power a small city. He can also shoot powerful electrical bolts from his palms which, if fired downward, are capable of launching him high into the air. His primary weakness is water. Before Adam Kane found Mulwray, he was a thief. Mason Eckhart captured him and used him to hunt down the other New Mutants. However, Mulwray escaped and managed to join Mutant X along with Emma DeLauro.
Emma deLauro (Lauren Lee Smith) is a Tele-Empath who can communicate her feelings and emotions and receive the feelings and emotions of others. Her abilities allow her to manipulate the emotions of those around her. She has limited precognition, demonstrated in episode 3 of season 2 and she also has the ability to induce hallucinations into the minds of others by drawing their own emotions. During her time in the team, Emma developed her Psionic Blast which she uses as an offensive weapon to knock her opponents unconscious, alter and erase memories, and killing them upon impact. She can also shoot strong and powerful Psionic Starbursts and Psionic Shockwaves. Her powers grew as season 2 progressed, allowing her to broadcast emotions at a greater distance, though she could not isolate targets when doing this. Before Adam Kane found her, DeLauro sold clothes at retail and used her control of emotions to become a successful businesswoman. Initially resistant to joining Mutant X, she eventually developed an attachment to Brennan Mulwray. DeLauro was killed in an explosion at Naxcon Corporation Industries (Nicholas Fox's company).
Lexa Pierce (Karen Cliche) was the first member of the original Mutant X. As a Chromatic Molecular, she can bend light to make herself and anyone she is touching invisible. In addition, she can shoot laser beams from her fingertips to wound or kill her enemies and blinding light flashes with her hands to temporarily blind her foes. Pierce cannot stay invisible for long before reverting back to normal. Even in her invisible state, she is visible to infra-red light or Feral Vision. She is also a skilled martial artist.
Ha! I invent the word impossible. That's why I am the champ. Whether I like it or not.