Treize Merquise

Treize Merquise (トレーズ・マーキス, Toreizu Mākisu) is a natural-born Arrancar and a former member of Aizen's Arrancar Army. He was one of the first Arrancar recruited, and widely regarded as one of the most powerful, but was later demoted to the Privaron Espada following Aizen's acquisition of the Hogyoku. Incised by this decision he would defect prior to the, leaving no trace of his existence behind. Years later he would resurface, having acquired even more power than before, and encountering Tier Harribel who approached him to join the newest generation of Espada. He is currently assigned as the Primera Espada.