Gajimaro is an enemy encountered in Onimusha 3: Demon Siege. It hides in chests and boxes and likes to use surprise attacks when they are opened, and often takes any items in the container, with it. It appears as a small, harmless, little, wooden doll in the form of a little boy. In actuality, it is a Genma child that is possessing the doll to survive and act as a physical host on it's behalf. It could also be an evil spirit due to the fact that it utters an empty, childish laugh when nearby.

Gajimaro also has a female counter-part, Babion.