(Note:Appears only in Episode 13)
A ghost of an art teacher of old school who had an obsession by the italian artist Leonardo Da Vinci, hence the meaning of his name. When he died, he gained powers to suck every being to his paintings, making him fearful for both humans and ghosts. He was sealed once by Satsuki's mother in a painting that portrayed the old school, but then he was unintentionally freed by Satsuki that did a similar painting of her mother.
(Source:Wikipedia)