Rutilus Macolosus Lupus' (赤い狼, Latin for Red-Spotted Wolf, Japanese for "Red Wolf") is an old and uncommonly powerful A-Class Daemon, born from the anguish of an abandoned and mistreated dog. He dates back 326 years. In the late sixteenth century. About year 1684 to be exact. Rutilus main form is a twisted version of that very same dog that gave him life. And its sorrow and anguish has fed Rutilus with a dire hatred for Humanity. As well as his love for dogs.