Do fake endings count too? In that case it was the fake ending in Kid Icarus Uprising. I was really confused, who resurrected Medusa? Why is this game so short? And then suddenly BOOM! Hades in the house! And it all made sense. I really liked Hades at that point because he made clear the game wasn't over yet. Aaaaand then he grew more and more annoying. At first he was quite funny with his sassy attitude but at the end of the game I had no regrets killing him off.