Odion Ishstar AKA Rashid Ishtar in the original Japanese anime and manga is the adoptive brother of Marik and Ishizu Ishtar.
Odion became second-in-command of the Rare Hunters with Marik as leader. Even when mistreated or had his life threatened he remained loyal to Marik. During the Battle City tournament Odion pretended to be Marik while Marik himself entered the tournament under the guise of Namu. Odion is the only person capable of suppressing the dark half of Marik.
In the English dub version of the anime by 4Kids Entertainment Odion was voiced by J David Brimmer. During flashbacks as a teenager and young adult, Odion was voiced by Ted Lewis.
In a lesser known English dub by Odex Ltd Odion was voiced by Brian Zimmerman.