Hah, that is one hell of a glass jaw!
This kinda reminds me of a very silly early Video Game monster called the Healer.
It was from the game, "Caverns of Freitag," and to use the healer's healing power's you had to chase one down and stand on top of it.
The creature will still attack you, but by restraining it, you slowly drain it's life force into your own.
Quite dark, but I imagine this Lad of Elixir would likely sacrifice himself to be drank by a hero better able to protect the greater good.
It's honestly one of your simpler designs, but it's back story's weight makes up for it.
Thank you for making this.