The new Superman movie introduces Krypto, a super dog who stands out even more than Superman himself. Krypto, originally appearing in 1955 as a white Labrador Retriever, has evolved over the years. In this film, he is depicted as a terrier mix, inspired by director James Gunn's own rescue dog, Oou. Gunn adopted Oou from a hoarding situation, where the dog lived with 60 others. Oou's destructive behavior, including eating furniture and a laptop, inspired Gunn to imagine what life would be like if such a dog had superpowers. This concept significantly influenced the storyline of the movie, adding a unique twist to the Superman narrative.