A natural coward, cynic, and pessimist, Kai could often be found on the sidelines making smart-alecky comments. His fighting style leaned towards bombarding foes with the Guncannon's long-range armaments, but when he got in a fix he was able to pull off hand-to-hand attacks with the Guncannon. He dislikes it when things move slowly. However, Kai quickly became disenchanted with war and he decided to desert the "White Base" when it was docked for repairs in Belfast, Northern Ireland. In Belfast, Kai meets a young girl named Miharu Ratokey who lives just outside the city, and agrees to sneak her onto the "White Base" and take her to the Earth Federation headquarters in Jaburo, located along the Amazon River in South America. Kai soon figures out that Miharu was actually a hired Zeon spy sent to infiltrate the "White Base" and discover Jaburo's location.