The Yen Brothers are two brothers from Japan in the TMNT Adventures comics. They carry out illegal gambling involving sumo wrestling matches.

They appear in the issue The Good, the Bad and the Tattooed, kidnap Tai San's dog Inky, and tell Tai San he must lose or else they will kill Inky. By the end, the Yen Brothers and their henchmen they are defeated by the Ninja Turtles, Splinter, Ninjara and the Warrior Dragon.

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