Sadist - Self-Destructive - Insane

Kostiago was a normal man, until getting into self experimentation, this caused a huge rift in his personality and in how he began to look. With every experiment his skin slowly deterioted, and in a last ditch effort he attempted to soak himself in a vat full of a special serum that was supposed to help regenerate his skin, sadly the opposite happened and now he is just a horrible acidic goop with bones floating around inside a heavily moded hazmat suit. When he was still somewhat sane he attempted to experiment with 'volunteers' on reversing his predicament but slowly all sanity melted away and turned him into the monsterous hazmat beast he is currently.