Royd Lloyd is a Quincy and a member of the Vandenreich's Stern Ritter, designated as "Y." He is the identical twin brother of Loyd Lloyd.
From birth, Royd and his older brother, Loyd, were indistinguishable from one another, even to their parents and the medical staff who delivered them. By the age of five, the brothers discovered that their perfect resemblance was due to unconsciously imitating each other while still in the womb. When they turned twelve, they found that they could mimic not just each other but also other people. Although neither could replicate someone else's appearance, Royd had the ability to copy a person's memories and personality.
(Source: Bleach Wikia)
