TV-Series
Description
Dr. Sakezo Sado serves as the Head of the Medical Division and chief medical officer on the space battleship Yamato in the series Star Blazers 2199. Despite his vital role, he is a civilian rather than a uniformed military officer, though his rank is considered equivalent to that of a Lieutenant Colonel. Born on October 1, 2144, he is one of the older members of the crew, bringing decades of life experience to his duties.

Sado possesses a deeply unconventional background. He originally trained and worked as a veterinarian, but after an unsuccessful career treating animals, he shifted to human medicine, eventually rising to become a ship's surgeon of first-class skill. This unique path gives him a pragmatic and sometimes brusque manner, with his veterinary origins surfacing during particularly tough medical procedures, such as performing surgery without anesthesia and instructing the patient to endure the pain silently. He is an all-rounder in medical knowledge, understanding the limits of his field and the impermanence of life perhaps better than anyone else on board.

In terms of personality, Dr. Sado is primarily known for his carefree and jovial demeanor, which is almost always accompanied by heavy consumption of sake. He is rarely seen without his bottle, and this fondness for alcohol provides moments of comic relief, such as securing his drink before his own safety during the ship's maneuvers. However, this indulgent exterior masks a fierce dedication to his duties. During medical emergencies, accidents, or when lives are at stake, he becomes intensely focused and deadly serious, shedding all traces of his usual drunkenness to perform complex surgeries in the midst of combat situations.

His role aboard the Yamato extends far beyond that of a surgeon. Sado is a resilient senior figure and an advisor to the younger crew members. He offers life counsel and mental care, and he is known for his unconventional but effective way of handling people, such as quietly making a room in the medical section available as a relaxation space for new recruits and turning a blind eye to minor infractions. He shares a unique and forthright dynamic with Captain Juzo Okita, being one of the few people who speaks to him with complete candor. Aware of the Captain's terminal illness, Sado becomes a fierce advocate for his treatment, passionately urging him to undergo life-saving surgery despite the Captain's reluctance.

While his exact history aboard the Yamato prior to the 2199 voyage is not detailed, his motivations are clear. He is dedicated to preserving the health of the crew and ensuring the success of their mission to save Earth. His primary drive is his responsibility for the lives of those on board, and he is known to denounce misconduct and irresponsible behavior without hesitation when it threatens this duty. Relationships with key crew members are central to his function. He shares a close professional bond with Yuki Mori, who often assists him in the infirmary, and he serves as a mentor figure to the younger officer Susumu Kodai, offering him advice and guidance.

In the Star Blazers 2199 reboot, Dr. Sado is presented with enhanced competence compared to some earlier depictions. A notable example of his capabilities includes an unconfirmed incident where he successfully disarmed mutineers, proving that his abilities extend beyond the medical field. His signature abilities remain his top-notch surgical skills, which function effectively even when he is intoxicated, as he claims it is vital to keep his mind clear on the important things. Ultimately, Dr. Sakezo Sado embodies a duality, serving as both a source of lighthearted humor and an indispensable, highly skilled professional whose presence is critical to the survival of the Yamato and its crew.