Captain Marvel Jr. coma after being thrown into the lake by Nazi, and Freddy is found to have a severely injured spine and a broken leg, which will prevent him from ever walking again. After a second attack from Captain Nazi, the injured Freddy is taken to the wizard Shazam by Captain Marvel and his sister Mary Marvel, who both grant the boy the power to become Captain Marvel Jr. However, Jacob dies, and Captain Marvel Jr. goes on a rampage against Captain Nazi until the other Marvels intervene. Nazi and Captain Marvel Jr. would become arch-enemies, regularly pitted against one another. Junior
Adventures of Captain Marvel most popular superhero, and they agreed. Director William Witney, however, was skeptical about trying to adapt Captain Marvel after the problems encountered with Superman. In spite of this, "Adventures of Captain Marvel" became the first superhero film adaptation of a comic book character. National attempted legal action to prevent Republic from developing their arch rival's most successful character, citing Republic's failure at adapting a Superman serial. Their attempt was unsuccessful, however, and Captain Marvel went into production. Writing in his autobiography of the period, William Witney revealed that in his court deposition he had claimed that both Superman and Captain