"If you can't know the truth, live the most awesome lie you can think of."
-Isolde to Kira.

Isolde is one of the adoptive daughters of Nandita Merchant, and the adoptive sister of Kira Walker. She, like Kira and Ariel, is one of the new model of the Partials. Isolde is the mother of Muhammad Khan, who died due to the partials disease.