Superman in the Fifties #1

Superman meets three Kryptonian brothers who were convicted and sentenced by Krypton's Ruling Council to a sentence of suspended animation adrift in space due to their efforts to overthrow the Council and rule Krypton. Now that they have crashed on Earth, they plan to rule it instead. Superman tricks them into turning on each other, and they knock themselves out. Superman returns them to suspended animation and exiles them back into space.