Superboy Planet

The Legion of Superheroes is just infatuated with Superboy, and they have a planet in his honor; however, the Legionnaires imprison Superboy in a Kryptonite painted cage. They were playing with their time machine and saw Superboy destroy a train, and so they decided that Superboy was evil and had to be locked up before he committed this crime. I guess they forgot that Superboy grew up to become Superman, who they adore.