The 41-year-old actor plays a magician named Chester, who is the new owner of Jessica Lange's character Elsa's freak show, reported Ace Showbiz.
He apparently has romantic feelings for conjoined twins Bette and Dot (played by Sarah Paulson) and asks them to join him onstage during his performance to distract the audience.
Harris will appear in episodes 11 and 12 of 'Freak Show', while his husband Burtka will be featured in the season finale.