Personality: Due to their upbringing and training by Emma Frost the identical quints come across as cold and unemotional. Mysterious, stripped of emotions and terribly intelligent, Stepford Cuckoos have a very cynical view of the world, and are still adjusting to their places at the Institute.

The Stepford’s have a unique type of collective mind. When together they have an eerie way of acting the same. All of the girls exhibit a calm and collected demeanor when it comes to business. They are well spoken and don’t mind voicing their opinions.

The girls are fiercely protective of one another. The quickest way to stir their temper is for them to feel cornered or attacked. However, like all sisters there are times when they are heartily sick of one another. It’s at these times you’ll find them as close to arguing and divided as they ever come.

Even though the girls are similar in many ways, they do exhibit unique personalities traits. These traits are much more obvious when one of the Stepford’s is alone and without her sisters.

Strength: The Stepfords possess the normal human strength of girls of their age, height, and build who engages in moderate regular exercise.

Distinguishing features: When using their telepathic powers for communication their eyes take on a white glow.

Known superhuman powers: The Stepford sisters share a unique telepathic and empathic bond that allows them to operate with a collective mind. They can communicate so rapidly through their connection, that they often speak in unison or even finish each other’s sentences. In essences, this shared bond gives the Stepford’s the appearance of acting as one entity.

The strength of the telepathic bond the girls share is based on their proximity. In the same room the girls can act in unison. The further away, the weaker the bond grows. Telepathic speech and shared empathy becomes faint at about ten miles. At great distances, the girls can only sense each other’s presence in their mind.

It's known that they were born in New York, and after the death of their parents somehow came into the care of Emma Frost. She set them aside from her Academy and the Hellions, and chose to teach them privately.

Although the girls cared for their 'mother' they began to doubt her when they were made to take part in some of her more illegal dealings.

When they learned the existence of Professor Xavier and his school they started to ask Emma if they could enroll as students in the Institute. Emma refused, not wanting to let the girl's go and not revealing to them that she considered the X-Men her enemies.

In time though the girl's found out for themselves when they came into direct contact with the X-Men during a fight between the two. The girl's, showing a much higher level of telepathy than Emma had realised, took control of her and announcing they would be leaving with the X-Men. They have been students of the school ever since, and so far Emma has not tried to claim them back.