Helebon was the first Devil of Earth's Hell and a fallen angel, originally being one of three primordial angels that WriterGod brought to Earth with him when he circumvented human destiny from the Cosmic Deities; Three Fates, Aeon and Runekeeper. Not having a true corporeal form, he wears a firey cloak that was created by his wife, Ariana. He has two sons, the eldest named Stan, who became a Demon Prince and even Devil after his father, while his second son, Marcus, became a general in Hell's forces before he attempted a pact with an angel called Verrine and became DarkSide, while Verrine became LightSide. Though he was once a good and kind creature, he was gradually twisted into a demon by Hell, never permitted to leave his assigned role as its warden by WriterGod. He would eventually lead a rebellion against the WriterGod and his favoured humans of Atlantis, but was imprisoned in the Tenth Circle of Hell before he could eventually escape and fought against the NeS Heroes. He was eventually trapped within Darkfoil by by the NeS Heroes, alongside Vashuko and DarkSide 3000, a possible future variant of Marcus. Though he did eventually escape again, he was returned to Darkfoil by Jim7, who had also taken on the role as Devil but also the Christian God, during the climax of Neverending Story 2.