In Infinity Gauntlet (1991), when Adam Warlock summoned cosmic superpowers to rally against Thanos, Eternity and The Living Tribunal also appeared. And, when Eternity accused Thanos, The Living Tribunal said that he didn't think Thanos committed a cosmic crime.
I have considered the matter and cannot concur. Thanos only strives to replace your importance in the universe with his own. Natural Selection is one of the universe's oldest canons: The strong replace the weak. It is as it should be. No cosmic crime is being committed.
- The Living Tribunal (to Eternity)
So far, Thanos had:
murdered half the living things in the universe.
destroyed countless star systems.
kicked Earth out of orbit (with US west coast and Japan going under water and other places facing big tsunami and earthquakes).
shattered Bifrost Bridge cutting Asgard from midgard.
Even higher gods and titans like Odin and Zeus considered it crime.
But, I can understand the position of The Living Tribunal who could have seen all these like we see dusts flying around and ants getting killed. And, he can have entirely different philosophy of life.
I am curious to know what does The Living Tribunal consider a "Cosmic Crime"? Has he ever served his purpose of existence by really finding a crime?