|Book Universe||The Saga of Darren Shan|
|First Book Appearance||Vampire Mountain|
Seba Nile is Mr. Crepsley's former mentor and Vampire Mountain's quartermaster. Seba Nile served as a big inspiration to Mr. Crepsley. He dressed in all red, which is where Mr. Crepsley got the idea since the vampire wanted to be just like him. He is the oldest living vampire by the end of the series, at over 700 years old.