The phrase comes from the B1 battle droids introduced in Star Wars Episode I The Phantom Menace in 1999, where Roger Roger was their standard reply to orders from commanders. It returned throughout the prequel films and The Clone Wars, becoming as associated with the Separatist army as Darth Vader is with the Empire. Fans clipped the line for forums, gaming chats and video edits, and its short, clear delivery made it a lasting Star Wars meme for any obedient or clueless response.