'Mad' Scientist

Jake's heart tightened. He knew that it would come to this at the end. And he hoped that it wouldn't. But one thing that he noticed was that the scientist in front of him didn't have a HP bar seen. 

That meant one of two things. 

She was an indestructible NPC. One that could control what happened in the boss realm. 

Every single god was one, but they never appeared in the game, so rarely did someone get smitten by one of the gods.

And then, there were the NPCs that weren't meant to be battled. These NPCs also didn't have a HP bar, because they weren't supposed to die. 

Jake hoped that it was the latter. If it was the former, then there were going to be more problems than just dying once. He could lose his karma, and he could lose many of his items in the inventory.