Yen Ragun

The eldest boy in the Ragun family, sixth grade. Yen, who loves to study, has ranked the highest on the national elementary school standardized tests for five years running! He has read and memorized all of the many Gakushi reference books in the Ragun home and takes things seriously, always thinking of his younger brother. As the eldest son of the Ragun family, Yen has a strong sense of responsibility. Although Yen take things seriously, he also has an energetic side that is a match for the mischievous Jin, and a calm side that acts logically. In battles with Maga, he spreads barriers and analyzes the enemy. While he's at it, he keeps Jin under control. (Source: Tokyopop)