Galactus initially had a herald, the Fallen One, but this first attempt ended in failure due to the Fallen One’s rebellious nature and destructive tendencies. After imprisoning him, Galactus continued his hunt alone until he encountered Norrin Radd, whose nobility made him the perfect choice for the Silver Surfer. This experience taught Galactus to be more selective in choosing heralds, leading to the successful creation of a more disciplined servant.