Plasma Absorption – The ability to absorb the energy of a plasma source.
Suns are basically giant balls of plasma. The Sun-Eater (DC) absorbs the energy of Suns! In Adventure Comics V1#352, Superboy explains how the Sun-Eater works to the Legion of Superheroes.
In Tales of the Watcher, An alien tells the Watcher (Marvel) how he plans to steal the Sun of the Earth and make our Sun the sun of his own solar system. The alien ridicules the Watcher’s oath of none interference but this oath also means the Watcher cannot help the alien when the alien’s ship sinks into a bog (Tales of Suspense V1 #55). The Watcher probably intended this outcome in the first place when he engaged the alien in a long conversation with many questions since the Watcher is practically omniscient anyway.