the team. Kitty was able to track Nightcrawler who went missing after a battle with Nimrod. The only characters to use Cerebro on a frequent basis are Professor X, Jean Grey, Emma Frost and the Stepford Cuckoos. However, Rachel Summers, Danielle Moonstar, Psylocke and Ruth Aldine have also used it. After the device was upgraded to Cerebra, Cassandra Nova used it in order to exchange minds with Xavier. The Stepford Cuckoos once utilized the machine to amplify their combined ability, with only one of them directly connected to the machine, but all of them experiencing its interaction due to their psychic rapport. The strain of mentally halting a riot during Open Day killed Sophie, the Stepford Cuckoo who was hooked up to Cerebra. Sophie was both inexperienced at using Cerebra and was high on the mutant-enhancing drug "Kick"; however, it was revealed that it was not the strain of using the machine, nor the drug, that was responsible for her death, but Sophie's own sister Esme, who also used Kick to power her own abilities, seize control of the Cuckoos temporarily, and manipulate Sophie into her death. The now remaining three Cuckoos demonstrated that they were capable of using Cerebra with relative ease in Phoenix: Endsong. Some mutants have learned to shield themselves from Cerebro, usually via their own telepathic ability. Magneto can shield himself from the device through use of minimal telepathic powers; in the film series, he does so with a specially constructed helmet. It would soon become apparent as to just what and how Cerebro was really meant to be used; on top of tracking and locating mutants across the globe the tracking device's primary function was to act as a soul jar that could catalog the thought pattern self of any and every mutant ever pinpointed through it. X essentially utilized this function to resurrect the mutant strike team lost while battling the Orchis Group by withholding their hard copied mind's, their anima, onto home grown clone bodies; which would effectively allow him to resurrect any and every mutant who has ever died or will die by imprinting a shell with their respective neuropsychic imprint. History of the device Originally, Cerebro was a device similar to a computer that was built into a desk in Xavier's office. This early version of Cerebro operated on punched cards, and did not require a user (telepathic or otherwise) to