Sinister has an obsession with Scott Summers and the Summers genetic line, which led to him create a clone of Jean Grey called Madelyne Pryor, with the sole purpose of breeding with Scott.
Sinister has an obsession with Scott Summers, also known as Cyclops, and the Summers genetic line. This led Sinister to create a clone of Jean Grey called Madelyne Pryor, with the sole purpose of breeding with Scott.