Survivalist plan and prepare for a major disaster. This research describes construction of the 8-item Survivalist Behavior Questionnaire (SBQ) and its nomological network which highlights that survivalists are disagreeable, low in rationality, and high in psychopathy, Machiavellianism and narcissism. This suggests relatively high malevolence as well as high capacity for self-preservation. They are also fantasizers of sensation seeking, deep learners, and high in entrepreneurial intent which suggests ingenuity and ambition. They are also of lower general ability and lower rationality which suggests some limitations in the way they analyze information. Compared to the general population, survivalists are potentially dangerous in terms of personality (e.g., they are high scorers on the Dark Triad) and behavior (e.g., they may stockpile weapons) but also have strong preservation instincts that might be of benefit, at least to themselves, should disaster strike.