In the Continuous Casting process, molten metal is poured through a die of the desired outside profile. If an inner shape is also desired, the material may flow around a mandrel to create that profile. As the material flows through the water-cooled die, sufficient heat is extracted to solidify an outer shell.
In the comic strip, when the heroic Flash Gordon and his friends land on the fictional planet Mongo, they found it was ruled by an evil Emperor, a despot who quickly becomes their enemy. He was not named at first, only being known as the Emperor until several issues later when his name was revealed to be Ming.
The origin story of Superman relates that he was born Kal-El on the planet Krypton, before being rocketed to Earth as an infant by his scientist father Jor-El, moments before Krypton's destruction.he enemy that accomplished the most, by actually killing Superman, is the raging monster Doomsday. Darkseid, one of the most powerful beings in the DC Universe, is also a formidable nemesis in most post-Crisis comics.