Marth

Marth (Mars in the anime) is a character from the Fire Emblem series of video games. He is the central protagonist and Lord-class character of the original game, Fire Emblem: Shadow Dragon and the Blade of Light, and its sequel Fire Emblem: Mystery of the Emblem, as well as their respective remakes. Although Marth's Fire Emblem titles were released only in Japan at the time, he has acquired more widespread international attention through his appearance in the Nintendo brawler, Super Smash Bros. Melee.

The appearance of Marth and Roy sparked a greater level of Western interest in the Fire Emblem series, and it was in part because of this that Nintendo began releasing the games internationally beginning with Fire Emblem: The Blazing Blade, the seventh title in the series. Due to his various appearances in Fire Emblem and his presence in Super Smash Bros and other crossovers, Marth is often looked at as the face of the series.

(Source: Fire Emblem Wikia)