Gold Arm (ゴールドアーム)

A pitcher-type baseball leaguer who acts as the ace of the Dark Kings, and the eldest brother of the three Gold Brothers. As a fierce player who has continued to play in the Dark Kings for 10 years, he beats his opponents with his "Genocide Screw", a dangerous pitching technique that damaged Leaguers through foul balls.

While he is reliable person who praises his comrades, he also a person can easily get heated. But even so, he always does his best to serve as a good role model for his younger brothers and supports them.

(Source: Shippuu! Iron Leaguer Wiki)