The Christmas special of ‘Doctor Who’ is always filled with extra surprises, and this year the cast is coming together to welcome a superhero.

BBC America confirmed a few more cast-members that will be joining the good Doctor on this year’s annual special, including a comic-book superhero character that lives in New York. The episode was written by Steven Moffat, and is called ‘The Return of Doctor Mysterio’.

The hit BBCA series will return on Christmas day as the Doctor, played by Peter Capaldi, teams up with an investigative journalist, played by Charity Wakefield (Wolf Hall, The Player) and a superhero to save New York from a deadly alien threat.

Steven Moffat, Writer and Executive Producer, commented on the episode saying, “I’ve always loved superheroes and this Christmas, Doctor Who dives into that world. My favorite superhero is Clark Kent. Not Superman, Clark Kent.”

Grant will be played by Justin Chatwin (Orphan Black, Shameless). Chatwin also commented on joining the Doctor Who team saying, “Working with the amazing people at Doctor Who has been one of the most fun and rewarding projects I’ve ever had the pleasure of being involved with.”

Matt Lucas (Nardole) will also be joining the cast of the special with Adetomiwa Edun (Lucifer, Bates Motel), Aleksandar Jovanovic and Logan Hoffman.

BBC America attended NYCC this year to promote the new season of Doctor Who, a first for the series at the popular event. The network also released a teaser trailer for the special at NYCC, which you can watch below.

The 60-minute Doctor Who Christmas Special will air on BBC AMERICA and is written by Steven Moffat, executive produced by Brian Minchin, produced by Peter Bennett and directed by Ed Bazalgette (Poldark). It was shot in Cardiff at BBC Wales Roath Lock Studios.