Several fictional groups of mutants have used the name Hellions in American comic books published by Marvel Comics. The Hellions have always been portrayed as rivals of various teams of younger mutant heroes in the X-Men franchise, initially as actual villains and later on a team that was more of a school rival than actual enemies of the X-Men. The first and most notable incarnation of the Hellions were students of Emma Frost and the Hellfire Club's Massachusetts Academy, and were rivals of the New Mutants. The original Hellions first appeared in New Mutants #16 (June 1984), created by writer Chris Claremont and artist Sal Buscema. This version of the Hellions ended after an attack by Trevor Fitzroy and a squadron of Sentinels that killed several Hellions. Two later groups known as the Hellions or New Hellions both fought against various X groups such as Generation X and X-Force. In New X-Men: Academy X a new group of Hellions were introduced, this time they were a part of the Xavier Institute for Higher Learning, the Hellions was one of several factions that the students were divided into including the New Mutants, with whom they had a rivalry. After the majority of mutants lost their powers in the Decimation storyline the Hellions were combined into one squad as the number of mutants was greatly reduced. Hellions (Massachusetts Academy) The original group of Hellions were apprentices of the Hellfire Club and students of its White Queen Emma Frost. While attending classes at Frost's Massachusetts Academy, these young mutants secretly trained in the use of their powers in an underground complex beneath the school. They were longtime rivals of the Professor Charles Xavier's students, the New Mutants, and once held their own against the X-Men. The original Hellions were: Catseye (Sharon Smith), an American girl who could transform her body into a purple feline or semi-feline state and shift her size between that of a house cat or a panther. This granted her razor sharp claws, enhanced senses and physical attributes, plus a prehensile tail. Catseye originally believed she was a cat with the ability to transform into a human. Empath (Manuel de la Rocha); a handsome, yet cruel and arrogant young Spanish man with the ability to sense and manipulate the emotions of others. Jetstream (Haroum ibn Sallah al-Rashid), from Morocco, could generate bio-thermal energy that allowed him to propel himself through