Superboy #6/1968

In "Jern-guttens gjenganger!", the Legion of Super-Heroes faces a haunting crisis when the ghost of Ferro Lad orders their disbandment. As Superboy grapples with the sudden fracture of his team, a Controller emerges, revealing himself as the true architect behind the Sun-Eater’s destruction of Ferro Lad—and now seeks to turn the Legion into his weapon. But when the mysterious force behind the ghostly summons reaches through Superboy’s flight ring, the Controller is driven to madness, leaving the team to wonder what—or who—has truly returned.