Yammy Riyalgo is the tenth arrancar in sosuke aizen's army of arrancar. He is usually seen with Ulquiorra. His Zanpakuto release command is called Ira and his arrancar number changes when going into resurreccion form and is the only arrancar and espada to do so. After his battle with Byakuya Kuchiki and Kenpachi Zaraki, he succumbs to his wounds and dies. His aspect of death is rage.