Lucifer | Arcturus
Muggles say it. They say that magic is evil and comes from demons and devils, and that is why if they find a magical child, they treat him very cruelly, because they think it will get rid of the evil. It's all horrid nonsense.
Demons are what some people call the dangerous creatures from other realms. I know that they exist. I don't believe in angels or go to churches or read holy books, and I expect that serves to further convince muggles I'm evil, but I don't much care. As for Lucifer, the only fellow I know by that name is you.