TV-Series
Description
D'Artagnan is the young protagonist of the 1987 Japanese anime series The Three Musketeers. He is a fifteen-year-old from the Gascony region of France who travels to Paris with a single-minded dream of becoming a King's Musketeer. His only possessions are his father's sword and a letter of introduction, marking him as an ambitious but inexperienced country boy in the big city.

In terms of personality, D'Artagnan is defined by a mixture of cheerful energy and impetuous courage. He is portrayed as kind, gentle, and good-natured, which allows him to be well-liked by those around him. However, his youth and Gascon heritage also make him hot-headed and rash, and his audacity frequently provokes those he meets. This lack of caution is evident immediately upon his arrival in Paris, as his naive behavior leads him to inadvertently offend the three musketeers—Athos, Porthos, and Aramis—resulting in him arranging duels with all three of them.

This initial conflict, however, is the catalyst for his primary role in the story. Before the duels can commence, the group is interrupted by the Cardinal's Guards. D'Artagnan chooses to fight alongside the three musketeers against the guards, and their shared victory forges an unbreakable bond of friendship. This event cements his place as the fourth member of the group, and they adopt the famous motto All for one, and one for all. From this point forward, his role is that of the determined newcomer who provides much-needed stimulation for the more established musketeers, as his daring nature propels them into numerous adventures. These missions involve the complex political intrigues of the French court, including protecting Queen Anne's reputation from the schemes of Cardinal Richelieu and the dangerous spy Milady.

A key relationship that shapes D'Artagnan's journey is with Constance Bonacieux. He first encounters her when he accidentally collides with her while riding his horse, and he is immediately smitten by her beauty. Despite her initial rebuffs of his advances, his feelings for her grow throughout the series, becoming a central motivation for his actions. He repeatedly risks his safety to rescue her when she is in danger or kidnapped, proving his commitment and concern for her well-being. Over time, Constance returns his affections, and they develop a deep romantic bond, culminating in a kiss by the end of the television series.

D'Artagnan's development across the series is a clear transition from an impulsive teenager to a respected musketeer. His courage and sense of honor are tested through many difficult trials. One of his first major missions involves traveling to England to retrieve the Queen's diamond necklace, an endeavor that requires him to survive a storm, endure ambushes, and evade the relentless pursuit of Milady. Later, he plays a crucial role in thwarting the Man in the Iron Mask conspiracy, in which he confronts the primary antagonists and prevents a plot to replace the king. His loyalty to his friends is unwavering, as demonstrated when he stands by Aramis during a personal investigation that leads to his own arrest on false murder charges; he maintains his innocence throughout, relying on the same camaraderie he helped build upon his arrival in Paris.

Regarding his notable abilities, D'Artagnan is an exceptionally skilled swordsman for his age. His combat prowess is first hinted at when he challenges three experienced musketeers at once, and it is proven in the many battles he fights alongside them. While his youthful enthusiasm often gets him into trouble, his quick thinking and sharp sword arm consistently help him find a way out, embodying the brave and just spirit of a true musketeer.