User blog comment:Syndromekad345/DC character with similarties to other villains: Brainiac/@comment-2059440-20160901214532

Galactus has quite a bit in common - they both "feed" on worlds, in Brainiac's case it is technology-based but both ultimately destroy entire star systems in their wake.. DC/Marvel went as far as merging the two : Galactiac.

there's also vague connections to Collector as Brainiac will "bottle" cities or items of worth - much as Collector will capture items of note or fancy (both also have vast resources)