Batman V Superman: 34 Easter Eggs & References You Must See

8. Lex's Star Wars Prisoner Number

When Doomsday is eventually dealt with and Lex Luthor is imprisoned, his prison uniform reveals his prisoner number to be 16-TK421, which is an oddly out of place reference to Star Wars. In Star Wars, TK421 is the number allocated to one of the Stormtroopers that Luke and Han disguise themselves as - a character who has grown his own cult status among fans since. It's a nice little nod, but it's weird to see a DC affiliated film making any reference to the competition.