Origionally; Jacon was nothing more than a drug-hallucination from Peter, a character from Humon's Niels' series where Jacob is based of off christian, hindu and japanese deitys.
Then after elaborating on him more Humon made him something of a nature spirit but was raised by Asura's (Hindu Chaos demons) and grew up with very bad influences. Now he exists for Humon to point out little quirks in easter and sometimes western mythology.