The integration of Paid, Earned, and Owned Media, known as “Triple Media,” is crucial in modern corporate communication. With global social media users projected to reach 6.03 billion by 2028 and Japan’s users expected to grow to 113 million by 2027, media strategies are becoming increasingly complex. According to the 2023 Ministry of Internal Affairs and Communications report, 63.7% of social media users rely on these platforms for information, with the internet (81.5%) surpassing television (79.7%) as the primary source. This study examines the relationship between consumer personality traits and media influence to enhance branding strategies. A survey was conducted among 379 university students in the Kanto region from July to October 2023 using the Japanese version of the Ten Item Personality Inventory (TIPI-J). The study analyzed personality traits—Openness, Extraversion, Agreeableness, Conscientiousness, and Neuroticism—through cross-tabulation, chi-square tests, and one-way ANOVA. To test the hypothesis, respondents were classified into four groups based on their most influential media type, and ANOVA was performed. The analysis revealed significant differences in personality traits across media types, with p-values below 0.05 for Extraversion (p = 0.033), Agreeableness (p = 0.017), Conscientiousness (p = 0.001), and Openness (p = 0.005). Television influenced individuals high in Conscientiousness, Twitter was associated with higher Neuroticism, Instagram attracted those high in Extraversion and Openness, while corporate websites appealed to highly Open and Agreeable individuals. These findings highlight the role of personality in media preference, suggesting tailored marketing strategies for effective media engagement.