The fourth season of "Invincible" has seen a significant improvement in animation and performances from the cast, particularly from Sandra Oh. The strongest performance came from a reunion between Omni-Man and his wife, Debbie Grayson, where Oh delivered such a gut-punch of a performance that has been anticipated for fans for a long time. The reunion was seen as a cathartic moment for Debbie, who had been dealing with the trauma of Nolan's actions towards her own life. The show has been praised for consistently doing right by Debbie compared to her comic book counterpart. Oh, who is the first actress of Asian descent to be nominated for the Primetime Emmy Award and the first woman to win two Golden Globes, also performed well behind the scenes.