<Li> In the third episode of TV series "Marvel's Luke Cage", the words, "once and future king," are written on a card at a memorial, following a shooting at a well - loved establishment . </Li> <Li> "Criminal Minds" S. 11 E. 16 </Li> <Li> "The Flash" episode 19 of Season 3 is titled "The Once and Future Flash". </Li>

All characters in the once and future king