Raphael is the entity that makes the most sense to have saved you. He send someone to save you later in the game if you take a certain path with Priestess Gut and fail some rolls (or just don't take them) even if you haven't meet him first.
He needs you.
I was thinking Raphael too but thought it made no sense for him to save you before you even meet him. Going by what we know it is the most likely possibility though.
I would have simply thought it was the tadpole who saved us. The fact we were falling head first to the ground comforted me in this idea. It just wanted to save itself.
