Spotlight On...TERMINUS!

[Monolith]

One of the Avengers' biggest foes, Terminus is the despoiler of worlds. He was created as a homegrown Galactus as an act of spite against the Celestials, who demolished the race who engineered him. Now he wanders the spaceways before landing on the next world he claims, breaking down the planet into base elements using his cracking field. No mere armored giant, Terminus is actually a microbial organism able to reconstruct its imposing bio-mechanical form when necessary, allowing him to return time and time again with the proper resources. Despite multiple attempts, however, the Earth remains the only world to resist his harvesting efforts.

https://mightyavengers.net/characters/terminus