Technically, he's a pseudo Shadow Lord, but the real Shadow Lords are kinda jerks. He was possessed by one of the Shadow Lords, Demons chosen by the Demon King to be his loyal underlings, and he gained some of that Shadow Lord's power. When he died, the Demon King personally expressed his wish for him to become a Shadow Lord. However, he denied the request because "I'm a good person, unlike the rest of those pricks." as he once said.