Kirenenko wears a prison uniform with red stripes, number 04. He has a safety pin stuck through his left ear. Originally a mafia boss, he was sentenced to death. He doesn't talk much, but is very dangerous when he becomes angry and goes berserk. When pushed far enough, he enters into a demonic rage form, which is clearly displayed by his face.
He likes order and does not forgive anyone who crosses his path or otherwise "meddles" in his life. He collects sneakers and is generally oblivious to, or apathetic about, the world around him while he reads his magazine advertising sneakers; he cares for nothing but his sneakers. He is also practically invincible as normal weapons such as bullets and clubs do not harm him. Poisons don't work on him either. When he dies, he is easily revived if pieced back together. He and Putin are the main protagonists of the series. [Source: wiki]