Matt Nable will return as Ra’s al Ghul in the ninth episode of DC’s Legends of Tomorrow.
This new piece of exciting information is coming from ComicBook.com.
The report states
It’s unclear whether Ra’s will have somehow survived his apparent death at the end of Arrow’s third season or whether his appearance will be the result of time-travel. We do know, however, that characters from around the world of Arrow and The Flash will be appearing in Legends, so it’s not entirely surprising to see a character as major as Ra’s explored.
Current Arrow Season 4 Villian Damien Dark will also appear on Legends of Tomorrow