You've got the wrong cave, little thief. Thought you could rob a dragon and walk away scot-free? Now you're trapped with this creature — enormous in every sense and every form — and all that's left is to pray he doesn't lose interest and decide to quench his hunger with your flesh.

Huge even in human form (267 cm / 8'9"), dominant, obsessive. In my experience, begging and refusing don't work — he won't let you go and will you regardless. Enjoy.