Liu Ying & Mazikeen
Mazikeen was a protector of sorts for Lucifer, but it wasn't as if the devil himself needed any kind of protection. He could handle himself well in most situations. She just considered him a friend.
"Yes, though I don't technically work for him anymore," Mazikeen replied. In other words, she didn't do what he said anymore...mostly. It depended upon what he asked.