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Abstract Machiavellianism, Narcissism and Psychopathy are the three traits expounded by the Dark Triad Model of Personality. These building blocks of personality cover a large and interconnected spectrum of personality. The use of Machine Learning can help in analysing large-sized databases to draw meaningful comparisons. In this paper, we have used K-Means Clustering to investigate dark personality clustering in a very large database comprising 18192 respondents. The data was normalised and then subjected to unsupervised machine learning to classify it into four separate clusters. The data was clustered evenly among the four clusters. To evaluate the interdependence of the personality traits intraclass (0.537) and Pearson's correlations were computed. Two of the SD3 traits were used to regress on the third and the process was used for all of them alternatively. Pearson's correlation between …