Lyon Satan is one of the characters appearing in Highschool ExC. He is a spawn of Ophis created by Ophis using her own power, wanting to know how it felt to have a child. Being taken in by Sora after Ophis sent him onto the world, having realized that having a child by artifical means is no good. He is the current Devil King Satan in the place of his adoptive father Sora, being assigned prior to his disappearance and being the first non-Devil Satan. Like his mother, he is also known as the Ouroboros Dragon and Infinite Dragon God. Although at some instances, the 'Dragon' being replaced by 'Devil', despite him not being a Devil at all.