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Kidd Gruff, known as Yagi Kenta (八木ケン太 Yagi Kenta?) in Japan, is a young boy from a small town in the Loch Mess area. He met his FM-ian partner, Goat Foo, at Alohaha. When they combine, they become Kung-Foo Kid, a wood-based martial artist known for his exceptional speed.

Neither Kidd Gruff nor Goat Foo appeared in the anime.

Game History

MegaMan Star Force 2

Kidd Gruff appears in the Loch Mess village after the events involving Zack Temple and Plesio Surf occur. Speaking to him unlocks his EM Wave Changed form as a secret boss, who can be fought in another area of Loch Mess.

Kidd Gruff is a well-mannered and respecting fighter, and is always ready to challenge Mega Man to a sparring match.


  • The word "kid" can mean both a child or a young goat.
  • His Japanese surname, Yagi (八木), is also the Japanese word for goat.
  • According to the MegaMan Star Force: Official Complete Works, the submission of Kidd Gruff included that Kung-Foo Kid was looking to avenge his parents, who were made into a goat stew.

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