Bokomon

Bokomon (ボコモン)
An old man-like Mutation Digimon wrapped in a haramaki. A knowledgeable Digimon scholar, it carries the "Monoshiri Book", which has things about the Digital World written in detail, but barely ever shows it. As it is poor at fighting, it is usually boisterous and lively, but when push comes to shove, it becomes surprisingly reliable, instantly taking on a serious look. Its Special Move is running away at tremendous speed when it feels that it can't win (Nigeashimou Dash).

Etymology
Boko: Probably comes from bokoboko, the sound of hitting something hollow. Bokoru is slang for beating someone. It can be noted that "boko" is an anagram of the word book in the roman alphabet.