Coyote Starrk

Stark
Rikiya Koyama : Anime Voice of Stark Starkand in Japanese : Sutāku is a male arrancar who appears to be very lazy; he is seen sleeping when the Espada learn of Aaroniero Arruruerie's death, and does not appear overly concerned by the news. His shoulder-length hair is dark and parted down the middle. He also has a goatee. The remains of his hollow mask consist of a bottom jaw that is positioned like a necklace. His hollow hole is on his sternum, right below the tip of his mask.

Stark is an Arrancar in Sōsuke Aizen's army. Stark is the Primero Espada, as told by Tite Kubo in an interview. Stark has also been confirmed as being Espada number 1. Stark resembles Shunsui Kyōraku in looks and demeanor in that he is lazy and easy going. Stark is first shown during Aizen's meeting when Ichigo Kurosaki, Yasutora Sado and Uryu Ishida enter Hueco Mundo to save Orihime Inoue and is later seen sleeping when the Noveno Espada Aaroniero Arruruerie is killed by Rukia Kuchiki. Stark does not seem troubled by the news.

Tite Kubo also stated that Stark will not fight Ichigo! or any Captain, yet he will fight someone else!

Lilinette
Stark's Fracción is Lilinette and in Japanese : Ririnetto, a female arrancar who seems quite mischievous, in that she enjoys waking Stark up in unusual ways: first by shoving her fist in his throat, then by squeezing his testicles. Despite her initially childish behavior, she does seem to show some concern for the ominous occurrences in Hueco Mundo.

Abilities
Stark also seems to be able to use teleportation techniques similar to Ulqiorra, this is shown in chapter 313 where he dodges Kenpachi Zaraki and ichigo's strikes simultaneously while teleporting Orhime to Aizen.