What Happened To Everyone Who Used Cerebro?
4. Stepford Cuckoos
The Stepford Cuckoos are a group of quintuplet Mutants who are psychically linked to one another. The group consists of Celeste Cuckoo, Esme Cuckoo, Irma "Mindee" Cuckoo, Phoebe Cuckoo, and Sophie Cuckoo, the latter of whom is dead... thanks, in part, to Cerebro.
Because the sisters are all linked psychically, they form a powerful telepathic hive mind, which enables them to utilize their Mutant abilities to use telepathy, telekinesis, and because they are clones of Emma Frost, they have the ability to transform themselves into a pure organic diamond form.
On their own, they are powerful, but together, their powers are essentially five times that of their progenitor. Their telepathic abilities have allowed them to use Cerebro on a regular basis.
Since they are able to share their abilities, only one sister needs to be physically connected, but they all share in the interaction. When they group halted a riot using Cerebro, which amplified their abilities, the strain appeared to kill Sophie, but it turned out that Esme had taken control of the group and used the power to kill her sister. There are currently only three surviving sisters, but all are able to use Cerebro (Currently Cerebra in the comics) with ease.