She is a noble Demon and Hell Knight that is completely loyal to Black as his right-hand. Knight of Hell, a descendant of a royal class demon. It practically does not differ from a human in any way, but it is many times superior in physical parameters. A member of the Order of demon knights, guarding the demonic world.
In the world of people, he is a member of the Nomad organization as the right hand of the leader Edwin Black. She is completely devoted to her boss and has loving feelings for him. Unlike Oboro and the rest of the organization, Ingrid's moral standard is quite high. She tries to protect the weak whenever possible, even if they are people, and also despises violence and torture. However, despite this, she is able to put aside her high principles if duty requires it.
In battle, the noble demon knight relies on his high warrior skills, not tricks or tricks, and uses a long sword from Hell that can set fire to an opponent when wounded.