Vaas is downright nuts. He's also violent, unpredictable, mercurial, prideful, and extremely dangerous. Vaas started on this downward spiral when he became addicted to drugs brought to Rook Island by Hoyt Volker. He eventually joined up with the self-appointed warlord after Hoyt promised him power and wealth. Now, on an island of madness, he is the most feared madman of them all.