‘Once Upon a Time’ Zeroes On Four Cast Members For Potential Season 7 Reboot https://t.co/dsGeybXGYS pic.twitter.com/22Qksmqs5M A potential seventh season that would reimagine the fairytale drama, focusing on four of the most popular characters on the show. Jennifer Morrison , Lana Parrilla , Robert Carlyle and Colin O’Donoghue are in talks with ABC studios to renew their contracts.