Gnome Alchemist, character design.
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Paranoid intending to blow everything up. Studying in the school of alchemy some students played a prank on him "they want to assassinate you because you are the chosen one" and that day he escaped from the school wandering by the world, fleeing of his possible assassins. He does not know the chosen one of what, nor who is trying to kill him, which does not help with his paranoia.