Onimaru is a boss specific to the Zeebo version, who appears only once, at the end of Mission 5. He is a giant muscular man (?) bearing a Hannya mask and carrying a giant ham bone (or at least it looks alike to me).
Onimaru brandishes his ham bone with such strength that a few hits kill any ennemy in the game, except for the bosses. He can also SMASH the ground dealing collateral damage to its surroundings. Onimaru can neither lift barrels nor pick up weapons, and cannot run or dash.
Note: I privated the previous version of the video, as that run was recorded with defective wires, so the sound was all over the place.
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