Kikyō clone

A clone of the priestess Kikyō was created to free the Shitōshin's Spheres of Power from the jeweled comb box in which they were trapped. The Shitōshin created her from blood sucked from the real Kikyō 50 years before by Gōra. She fought Inuyasha and, though he defeated her, he could not bring himself to slay someone who so closely resembled his former love. Ironically, the true Kikyō shot her clone in the back with a sacred arrow.

Trivia
In the fourth movie "Inuyasha: Fire on the Mystic island," the clothing that the fake Kikyo is wearing looks very similar to Midoriko 's clothing.