Date of birthday: ???
Color: Red or black.
Class: Ghost / Demon
Personality: He is the total opposite of Matthew. A cold, silent and reserved person, that is totally devoted to save others, diverting from his destiny. His company is a female ghost that also had a tragic destiny, Claire.
History: The story before he died still wasn't mentioned. This man was killed by a demon curse when he was young, and as revenge, he killed the demon and stole his name, Belial.
Just after he died, as a "ghost", he noticed that he had received the powers of the one who killed him. He could make the choice of hauting others, as a bitter soul - like millions of ghosts do when are killed this way - or saving others from the same destiny. He chose the second option.
Since then, together with Claire, he started destroying the ghosts and demons that torment the humans, purifying cursed places, until they met with Matthew, a human that had so much potential as they had. The problem is that he had so much potential that he ended up attracting many spirits. So he can't leave his mansion until Matthew learns to take care of himself, developing his own powers.
Belial and Claire explained to him that they were spirits that originally were humans that died because of possessions. But instead of holding a grudge and attack humans, they made a choice to fight against spirits and demons that try to harm and haunt others without reason.
As an exchange of favors, Matthew has to lend his own body to Belial once in a while (like a possession, but he won't do anything bad) This still scares Matthew a lot, but Belial isn't actually in a rush.
Characters related to the story:
Thanks a lot for the comments! ^_^