This goes h a r d. It feels like to me, this boss is like something of an inevitability that the players will always come back to. Maybe something like a roguelike game where the boss is aware that they're stuck in a time loop but so is the player, so the boss is all like, "Out of all the infinite paths you can choose from, it'll all still lead to me."
Very Thanos-esque but i think ish pretty cool :o