The Stepford Cuckoos are five identical mutant sisters who do the bidding of The Inner Circle. The Stepford Cuckoos share a unique bond that allows them to combine their individual telepathic powers to form a powerful "supermind." The Cuckoos can use their powers to read the minds of others, alter another being's perception of reality, manipulate the thoughts and bodily actions of others, or to shield their minds against telepathic probes. Through their bond, the Cuckoos communicate almost instantaneously, often speaking in unison or finishing one another's sentences. The strength of this bond is based on proximity; the further away they are from one another, the weaker it becomes. Each sister has a name - Celeste, Esme, Mindee, Phoebe, and Sophie Cuckoo.