Alex Cazellnu is a vice admiral serving in the Free Planets Alliance. Known for his expertise in logistics, he specializes in supply and rear-line support. Despite being uncompromising and possessing a sharp tongue, he is respected by his subordinates due to his easygoing nature and caring demeanor. Although many of his superiors dislike him, Alex has earned the admiration of Yangs closest friend, with whom he met while serving as chief secretary at Yang's military school.
Alex is married to Hortence Milbear and has two young daughters. He is often used by his friends as an example of the ideal family man. In addition to being a devoted husband and father, Alex encourages Yang to find happiness in love and family despite his melancholic and romantically incompetent nature.
Alex also entrusted Julian Minci into Yangs care.