Clones of the telepathic Emma Frost, they are mentioned to be former students on the Massachusetts Academy on the novelization of X-Men: The Last Stand. There's an absence of the other remaining Cuckoos, Esme and Sophie. The triplets were seen behind Professor X and Storm. They appeared right after Hellion did in the background.
- A different incarnation of the Stepford Cuckoos appears in the live-action X-Men TV series, The Gifted. They are referred to as the "Frost sisters", and the lineup consists of Esme, Sophie, and Phoebe Frost.