Background and Objectives: The primary purpose of the article was to examine the relationship between dark and light personality traits in university students enrolled in the Faculty of Sport Sciences. Materials and Methods: Data were collected from 518 students (208 female, 310 male) with an average age of 20.89 (±2.25). The Short Dark Triad and the Light Triad Scales were used. Harman’s single-factor analysis minimized measurement error, and various statistical methods assessed the effect of gender and age on personality traits. Results: Results indicated a positive correlation among dark personality traits, while light personality traits exhibited more complex relationships. Gender and age were found to significantly influence certain personality traits. Conclusions: This study contributes to the sports literature by exploring the role of demographic variables in personality formation.