Frakken Wolf

Japanese name:	ヴォルフ・フラーケン
Nickname:	The Hound

Wolf Frakken is Lt. Captain of the subspace submarine, UX-01 and answers to Grand Admiral Dietz only. Frakken is a man who enjoys the hunt and uses stealth tactics to bring down even the largest warship using his small ship.

Spoiler!When he was hunting the Yamato, he nearly disabled the Earth Battleship had it not been Kodai's quick thinking. He also was with Dessler when he revieled himself after his "death" and listened to him sentence Admiral Herm Zoellik to death, during the Battle at Balun. During the battle at Rainbow Cluster, Frakken secretly surface along side the Yamato and deployed a group of Zaltan commandos to kidnap a "special" guest on board(Yuki Mori). He the carried her on his ship to a prison planet and then to Gamilas after a riot on the world.
When Goer ignored the order to return to Gamilas, Frakken was charged with securing his arrest and came just as the Yamato was about to enter the space gate. Instead of arresting Goer, Frakken fires a spread of torpedo and destroys the renegade battleship, killing Goer and completing his mission.

He highly dislikes people who disrespect his subordinates and comrades including Zaltans. He almost punches the prison warden in episode 21, before Yuki stops the warden assault on Wolf's man. Yabu who abandoned the Yamato becomes the engineer onboard the submarine to everybody's liking.

Space Battleship Yamato Wiki