The success of "The Superman/Aquaman Hour of Adventure" in 1967 had prompted Filmation to produce a Metamorpho pilot and begin development on other similar series. These plans were cancelled when CBS secured the animation rights to Batman in the wake of ABC's recent success with the "Batman" live action television series. Going into production close to the start of the 1968 TV season, what would become "The Batman/Superman Hour" required Filmation to pull as many additional animators from other projects as they could spare to ramp up production.