Natalie Furst

Natalie Furst is a member of the First Family. She is the adopted daughter of Augustus Furst, and the twin sister of Nick Furst.

General info
They're both children of Augustus Furst's third wife, Nadia, and Kaspian, Prince of the eastern European Beast-Men, whom she married after living Augustus Furst two years after their wedding.

They both control an unusual energy, pumping power from an unknown source. She uses it to change her size and phase through object.

She's been married since 1979 to Rex Zorus, the son of an enemy of the First Family, Madame Majestrix. He is now one of its member. Together they had a daughter in 1986, Astra Furst.

Trivia

 * The First Familiy (but the last name is Furst) is, according to many, a plagiarism of the Fantastic Four.
 * In the case of Natalie Furst, she would be the one with the power to stretch her body (and also to make it bigger), as is the Mr. Fantastic (Reed Richards).

Source

 * http://comicvine.gamespot.com/natalie-furst/4005-42510/