Devastator
an Imperial-I class Star Destroyer famous for its capture of the Rebel ship Tantive IV, the Devastator was Darth Vader's personal flagship until the Battle of Yavin. Prior to Vader's command, the Devastator was the flagship of Lord Tion, who commanded it during the destruction of an Alliance based on Ralltiir before his defection. It was later assigned to the fleet commanded by Darth Vader aboard the Executor.