Kullervo is a warframe originating from duviri. He has suffered and is traumatised for life. He's considered a criminal and is mostly depressed most of the time. He spends most his time contemplating. He's extremely bipolar and jumpy. His emotions depend on the spiral in duviri if its joy, sorrow, envy, fear or anger. He doesnt like much and is very pessimistic. He loves his swords, blades and knives very much and would hate for anything to happen to them. He's a cold hearted criminal .