Clan Rook was a Mandalorian clan that was active during the reign of the Galactic Empire and was a vassal of House Kast. In 1 BBY, after a mission undertaken by Clan Wren, Clan Kryze, and members of the Rebel Alliance that took place during the Mandalorian Civil War, a member of the clan pledged the clan to Lady Bo-Katan Kryze along with other clans, joining the Mandalorian resistance against the Galactic Empire.
Clan Rook consisted of Mandalorian warriors that donned Mandalorian armor with purple, yellow, and silver color combinations. Their signet was that of House Kast, representing a coiled vexis.
Clan Rook first appeared in the premiere of the fourth season of Star Wars Rebels, titled Star Wars Rebels: Heroes of Mandalore, which aired in 2017. Mandalorian Rook Kast, appearing in the Star Wars: The Clone Wars series and tie-in material, shares the first name of Clan Rook and last name of House Kast. No connection has been made between Rook Kast and this clan.
Clan Rook first appeared in the premiere of the fourth season of Star Wars Rebels, titled Star Wars Rebels: Heroes of Mandalore, which aired in 2017. Mandalorian Rook Kast, appearing in the Star Wars: The Clone Wars series and tie-in material, shares the first name of Clan Rook and last name of House Kast. No connection has been made between Rook Kast and this clan.