The connecting record
statedSecret Wars · 2015
Molecule Man killed The Beyonders in Secret Wars.
he was the bomb they were standing next to
What each of them is ranked on
The killer · Molecule Man · rank 2
Owen Reece — comics
The most consequential character in Marvel that nobody puts on these lists. He starts as a man who is frightened of his own hands, and ends as the Beyonders' demolition charge — a version of him inside every universe, which makes him the mechanism the multiverse was destroyed with. He is also where Doom's godhood came from: he switches it off mid-fight, and then gives it to Reed Richards to rebuild the multiverse with.
statedNew Avengers · vol. 3 #29–33
A Molecule Man exists in every universe as the Beyonders' means of destroying it. — 2015
shownSecret Wars · 2015
Cuts Doom off mid-fight, then hands the power to Reed Richards to rebuild with.
The victim · The Beyonders · rank 1
The ones who finished — comics
They killed the Living Tribunal, they killed Celestials, and then they collapsed the entire multiverse to a schedule, universe against universe, until one was left. Nobody else here completed a plan that size. The contested tag is for the obvious objection: they barely qualify as characters, they have no dialogue, and their motive is never explained. The wreckage is still on the page.
statedNew Avengers · vol. 3 #29–33
Named as the killers of the Living Tribunal and the cause of the incursions destroying the multiverse. — 2015
shownSecret Wars · 2015
The multiverse ends, leaving one patchwork world assembled from the survivors.
What this does not settle
One death in one work. It is the only place the record puts these two in the same room, and it is evidence about that meeting and nothing wider — not a general matchup, not a rematch, and not a ranking of its own.
The ladder above it is argued from everything either of them has been shown doing; this page is argued from one citation.
Where the two disagree, the disagreement is the point, and it stays visible rather than being resolved by whichever of them happens to be on this page.