Ron

Ron (ロン, Ron) is an unusual creature which acts as Rock's constant companion.

Appearance
Ron comes in the form of a snake-like creature with no discernible eyes.

Personality
Ron seems fond enough of their users, due to not wanting to replace Rock despite its instability. It is quite joker but he gets serious at the right time. He has a very intimate relationship with Rock.

Background
Ron is part of the army of Black Shooter. According to what he said Nico, Rock is the new partner Ron, there are not information of this former partner.