The Dark Triad of personality may be related to an increased likelihood of experiencing suicide ideation, and aggression perpetration, which could lead to profound negative impacts in the lives of those high in the Dark Triad traits. Moreover, alcohol use may serve to mediate these relationships. The purpose of this quantitative study is to examine the influence of the Dark Triad of personality on suicide ideation, and external aggression, with additional consideration to the role of alcohol use. A survey was administered to 197 participants via Qualtrics to assess demographic information, Dark Triad traits, alcohol use, interpersonal needs, and external aggression using the Dirty Dozen scale, the Alcohol Use Disorders Identification Test (AUDIT), the Interpersonal Needs Questionnaire (INQ-15), and the Reactive Proactive Aggression Questionnaire (RPAQ). Data were analyzed using a structural equation model in AMOS. Findings suggest that the Dark Triad is significantly related to both interpersonal needs, and external aggression. However, alcohol use was not found to mediate these relationships. Our findings pose important theoretical, and practical implications for the potentially negative outcomes that those high in the Dark Triad may face throughout their lifetime.