Enpi-chan (or Enbi-chan) is a Demoness from the Enma-kun series. Shes pretty much nude and is the sister (sometimes cousin) of Enma-Kun and niece of Enma-Daio. She was in her own manga and it was a zany sexy f'd up comedy/P0RN0E/horror. She also has Male versions of Yukiko and Kapaeru with Yukihige and Kapako. In Ghastly Prince Enma Burning Up She's a minor anti-hero who tries to make the world "fun and sexy" but later joins the main heroes.
Dororon Enma-kun
