Character: Air-Walker (Gabriel Lan)

Nova Corps robot who became a herald to Galactus.  His origin wasn’t fully told until Thor #306, in the ’80s, despite that the character was created by Stan Lee and John Buscema in 1972.  And Thor killed him in that same story.

But somehow he WASN’T dead.  He was then killed by Ravenous’ army during the Annihilation event.  Silver Surfer created a black hole as his grave marker.