With what he senses, Thanatos is very interested in learning what's going on with Merios and the current God of Death. He's tried to catch the attention of a death god before, and Thanatos would try to do so again. He's also doing Red things, so going into the war areas is a given.

Trapping gods of death seems to be A Thing, and Thanatos knows how traumatizing much it sucks.

Sorry to the mods for all the godly politics, but Greek Gods causing problems? Yeah... kinda their thing.