Abner Doubleday

The admiral's tall, lanky translator. Named for the man who was once thought to have created baseball, but this is now generally known to be false. He is always present to translate Cartwright's statements, and when the village tell him, perfectly gently and reasonably, why they cannot comply he informs them primly that these are not requests but orders. He's pitcher for the Americans. After they vow no mercy, he starts deliberately pitching to injure the players. He gets on base due to Mugen's pitching being too unorthodox, but then has to face him down one-on-one after all the other Americans have been eliminated. He throws his bat at Mugen, takes the pitch in the face...and loses because Mugen still gets to his feet afterward.

(Source: Neko-san's Guide to the Characters of Samurai Champloo)