Purplebox is a former military special forces anti-terrorist, becoming captain of his brigade. 

He later formed his own private security agency called "the steel plates". 

Unfortunately, he is no longer part of this agency because of an accident that he indirectly caused, ending with the death of several of his comrades. He is currently on a journey of atonement in search of revenge for those who caused his misfortune, becoming a cold-blooded killer along the way.

Like Pandora's box... yes that's what i am