This research was conducted to develop a brand personality model that could be used to measure and compare the brand personality of a same brand across cultures. The results suggest that for West (the U.S.) and East (Japan), the bicultural BPD have five distinct dimensions of Sincerity, Sophistication, Ruggedness, Excitement, and Peacefulness, represented by the 15 attributes (wholesome, warm, kind, upper-class, elegant, romantic, masculine, tough, rugged, trendy, exciting, imaginative, shy, naïve, and childlike). The results show that many global brands have different brand personality perceptions across cultures. Only four (Levi’s, Nintendo DS, Shell, and Visa) out of 21 global brands had the same brand personality perceptions in two cultures. These results may be inconsistent with the definition of global brands—brands whose positioning, advertising strategy, personality, look, and feel are same or at least similar from one country to another. However, the results confirm the findings of Aaker et al. (2001) that brands have culturally specific meaning. The results also confirm the “the lure of global branding”—the goal of developing one strong global brand is often unrealistic (Aaker & Joachimsthaler, 1999). Still, in the business world, many companies are trying to globalize their own brands in order to enjoy the high economies of scale. Hence, it is important for the business managers to be able to measure the results of their global branding efforts. This research provides a tool, the bicultural brand personality model, the managers could use to measure their global brands in Western and Eastern cultures, and understand the similarity and differences across two cultures.