Ryuken Ishida (石田竜弦, Ishida Ryuken) is an Echt Quincy who is the son of Sōken Ishida and father of Uryū Ishida. He is the Director of the Karakura Hospital and also known as The Last Quincy (最後の滅却師, Saigo no Kuinshī); a title contested by his son.
