こんにちは!!
「その俳優、確か...ブレイキングバッドに出てたよね。」というのは「That actress was in Breaking bad too!」と表現になります。また、「That actress had a role in Breaking bad as well!」と表現もになります。
「主人公の奥さん役で。」というのは「As hero's wife.」と表現になります。または、「 She was the hero's wife!」と表現もになります。
「その俳優、確か...ブレイキングバッドに出てたよね。主人公の奥さん役で。」 を表現すると「That actress was in Breaking bad too as hero's wife! 」になります!
また、「That actress had a role in Breaking bad as well! She was the hero's wife!」にもなります!
Wasn't this actress the wife of the main character in the series called Breaking Bad?
この場合、次のような言い方ができますよ。
ーWasn't this actress the wife of the main character in the series called Breaking Bad?
「この女優ってブレイキングバッドの主人公の妻役だった人?」
the wife of the main character で「主人公の妻」
ご参考まで!