Nega Nebulus was one of the seven Legions that were led by a level nine Burst Linker, a King. It was led by the Black King, Black Lotus.
However, Black Lotus killed the first Red King, Red Rider and because of it, she went into hiding effectively disbanding Nega Nebulus.
However, after returning, she recreated the Nega Nebulus once more recruiting Silver Crow, Cyan Pile, and Lime Bell as new members. They are currently trying to obtain more territory and regaining their status as one of the Seven Great Legions.