Ethrus (Earth-646)

Ethrus the Harbinger Transcendent was a mightly powerful celestial beings, and one of the Celestial Seekers.

According to Raven, Ethrus is the cause of destructions planets and galaxies, and be the true cause of Remnant's destruction. However, after Thanos had collected the Infinity Crystals and the Aedra Gauntlet, Ethrus along with Eson the Searcher and Ion the Engraver confronted Thanos, but were effortessly killed by Thanos.