Kabu, he's a recurring non-copy ability enemy that, first appearing in Sahoto's Ghost in Cocoland. It yield no Copy Ability when inhaling him.
Kabu, he resembled a beetle helmet-like statue of a head. He has horn on its snout but no eyes.
Kabu is an abbreviation for Kabuto, a Japanese word means a helmet. Also, it probably comes from Kabutomushi, a species of beetle.