I know that everyone wouldn't side with me, but you have to admit it is a foolish action.
If I'm right, the heroes of Gilgamesh would be wary around a monster and if Muffin, who was christened 'The Destroyer of Civilizations' by Mik Hael were to accidentally or purposely harm a civilian, not only would they attack Muffin but so would the Witnesses in an attempt to maintain order. At which point Mik Hael would step in to try to stop the heroes, but Gilgamesh would run in to stop him as well as the Watchman and if he harmed either of their peoples, then it's a Divine War yet again. Also, consider that the all of the other heroes, except Mik Hael's, would be just as weary of Muffin and would probably do the same thing as Gilgamesh's thus dragging all the other gods in as well. Oh, wait that would result in all but Zaya and Wave being in the fight, thus 7 on 1.
See how I got my results?