Peter Halpin has been cast as Foggy Nelson's younger brother Theo Nelson in Daredevil season three. The actor confirmed the casting on Twitter.
Theo Nelson is a character original to Netflix's show, having not previously appeared in comic books or other media. According to Deadline, he's an employee of the Nelson family business, the Hell's Kitchen Butcher Shop.
Daredevil season three premieres October 19 on Netflix.