Utsuho Reiuji is a Yatagarasu (Hell Raven) who currently lives in Hell of Blazing Fires, a setting that is considered the final stage and she serves as a powerful final boss in the eleventh installment of Touhou series titled Subterranean Animism. She is also one of Satori Komeiji's pets alongside Rin Kaenbyou (a Youkai who can transform into a cat) but became the first true villainess within the series because Kanako Yasaka gave her nuclear recipes to commit the world domination or spread dictatorship as a villainous trait.
WARNING!!! This character can be dangerous to you with radiations. So be careful.