Fan CastingBatman: The Invasion (1978)

Bruce Wayne is now retired and living on a ranch in Mexico. He finally had cleaned up Gotham City from all of the evildoers during his superhero career. They all ended up in madhouses and penitentiaries. However, a new villain from beyond Earth, a being named Sun Yat Mars, springs all of Batman's old villains from their madhouses one stormy night and they become his minions. Beings called Marsies. He also starts kidnapping college kids and taking them to his Zombie Satellite to get their brains sucked out. Bruce must reunite with Dick Grayson (who is now a medical intern and expert guitarist) to become Batman and Robin once more and defeat Sun Yat Mars.