Matt Nable joins 'Legends of Tomorrow'

DC's "Legends of Tomorrow" is collecting superheroes and supervillains thick and fast and has just added another one - Ra's al Ghul.

Matt Nable will return as the villain, who was last seen meeting his end after a showdown with Oliver Queen in the season three finale of "Arrow", reported Digital Spy.

The "Arrow" and "The Flash" spin-off will feature an all-star cast including Brandon Routh, Wentworth Miller and former Doctor Who star Arthur Darvill.

DC's "Legends of Tomorrow" will premiere on The CW in the US on January 21, 2016.