Matt Harvey really is embracing his nickname.

Two years ago, fans started calling the New York Mets ace “The Dark Knight of Gotham,” a reference to popular comic book hero Batman. Mets faithful took to wearing Batman masks during the team’s postseason run this year, so Steiner Sports smartly asked Harvey to start signing them.

Steiner Sports is selling Matt Harvey signed Batman masks ($400) pic.twitter.com/dgk4PKuuWs — Darren Rovell (@darrenrovell) November 18, 2015

Harvey helped lead the Mets to their first World Series in 19 years this season, and he infamously refused to leave Game 5 after pitching eight shutout innings. He later was charged with the two game-tying runs, and the Kansas City Royals went on to win the series in extra innings later that evening.

One Royals fan in particular had some fun with the announcement about Harvey’s autographed masks.

@darrenrovell will he sign this version for Royals fans? pic.twitter.com/smTQZxQFfo — Jared Palmer (@JaredSPalmer) November 18, 2015

That’s in reference to the 2012 film, “The Dark Knight Rises,” in which Batman is defeated by Bane, who then breaks The Caped Crusader’s mask.

Sorry, Mets fans, but that sounds about right.

Thumbnail photo via Robert Deutsch/USA TODAY Sports Images

Thumbnail photo via Matt Harvey signed batman masks