Sōgenbi -- Fiery ghost of oil-thieving monk (based on Kyoto legend). The Kaibutsu Ehon ("Illustrated Book of Monsters") is an 1881 book featuring woodblock prints of yōkai, or creatures from Japanese folklore. Illustrated by painter Nabeta Gyokuei.
Keukegen- Japanese folklore: a creature covered in black fur that lives in peoples houses. Its name means "rarely seen". It was a disease spirit, inflicting sickness into those who lived in its host house. It also reminds me vaguely of cookie monster.