https://cdnph.upi.com/ph/st/th/6391784210353/2026/i/17842111024326/v1.5/James-Purefoy-Colin-ODonoghue-join-Robin-Hood-S2.jpg" /> James Purefoy, Colin O'Donoghue and Luke Roberts have joined the ensemble for Season 2 of MGM+'s adventure drama, "Robin Hood."