Serpent Undead

The Serpent Undead appeared in 2004 TV series called Kamen Rider Blade. Her real name is Azumi (あずみ) who is the human form of the Serpent Undead (サーペントアンデッド Sāpento Andeddo) and she is the Category Queen of Diamonds Undead.

A medusa-like monster that is hunting for the Joker, having the Tortoise Undead to aid her. Her hair changes to snakes and can be used as whips, and she has that hysterical laugh all the time, even in public, somewhat a psychotic person. She was wounded by Ryo Mikami, Hajime Aikawa's look alike, and sealed by Chalice, who gives the sealed Absorb Serpent card to Garren to successfully assume his own Jack Form.

She is seen fighting Kamen Rider Black and Kamen Rider RX.