Arrow's Oliver Queen (Stephen Amell) has a tumultuous history with Ra's al Ghul (Matt Nable) on 1 College Girl Karaokehis daughter Nyssa (Katrina Law) -- not to mention their deadly League of Assassins -- but there's one member of the twisted crime family that our hero hasn't crossed paths with yet: Ra's other daughter, Talia al Ghul.

Continuumstar Lexa Doig has been cast as Talia for Season 5 of Arrow, Mashablehas learned. Worldly and cultured, Talia is an elite warrior who doesn't pick sides, but rather creates her own. She will debut in episode 510 and appear in multiple episodes this season.

Talia is best known in DC Comics canon as an antagonist and love interest for Batman, with whom she has a son, Damian Wayne. She was most recently portrayed by Marion Cotillard on the big screen in The Dark Knight Rises.

Thus far, Arrowhas utilized several major Batman characters in addition to Ra's al Ghul and Nyssa, including Deathstroke (Manu Bennett), Deadshot (Michael Rowe) and Huntress (Jessica De Gouw).

This season, our titular hero will be facing off against a villain who doesn't have his roots in the comics -- a big bad known as Prometheus, who allegedly has a very personal vendetta against Oliver.

Arrowairs Wednesdays at 8 p.m. on The CW.