red thryssa
The Red Thryssa (붉은 바리, Bulg-eun Bari) is an extremely small fragment, a remnant of the corpse of the 43rd Floor Administrator that survived after Irregular Enryu killed the Administrator. It has intelligence and consciousness.
After Urek Mazino defeated Hell Joe, the soul core of Red Thryssa chose Twenty-Fifth Bam as its new host. Baam use Red Thryssa as a sword, having in moment 3 stages of transformation.[\spoilers]