Matt Nable will return as Ra's al Ghul in the ninth episode of DC's Legends of Tomorrow, ComicBook.com has learned and confirmed with WB/CW.

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.

Damien Darhk, another long-lived villain who has bad history with Ra's, will also appear on Legends of Tomorrow, actor Neal McDonough confirmed for ComicBook.com recently. Whether the two appearances will be related is also unknown at this point.

DC's Legends of Tomorrow debuts on January 21 at 8 p.m. ET/PT on The CW.

The series stars Arrow's Brandon Routh and Caity Lotz alongside The Flash's Victor Garber, Wentworth Miller and Dominic Purcell, with newcomers Franz Drameh, Ciara Renee, Falk Hentschel, Arthur Darvill, and Franz Drameh.