Ajax's personality combines supreme confidence in his enhanced abilities with coldly efficient combat effectiveness. He views himself as inherently superior to regular soldiers and approaches his missions with the detached professionalism of someone who has never truly been challenged. However, he occasionally reveals flashes of frustration with his orders and shows capacity for surprise when confronted with unexpected resistance.

His motivations center on retrieving the Millennium for his superiors while eliminating any resistance to Britannian authority. He seeks to maintain his elite status as a STAR and complete his missions with maximum efficiency, viewing the rebels as insignificant obstacles to be removed. His overconfidence in his invulnerability and surprise at the team's capabilities suggest he may be underestimating the true nature of his opposition.