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What's wrong, McFly? Chicken!
~ Griff calls Marty 'Chicken'
Griff-tannen-back-to-the-future-ii

Griff Tannen is the secondary antagonist in Back to the Future Part II. He if Biff Tannen's future grandson.

He is portrayed by Thomas F. Wilson, who also played Biff.

Doc has Marty pose as his own son and lookalike Marty Jr. to refuse an offer to participate in a robbery with Biff's grandson Griff, thus saving both of Marty's children from prison. Marty switches places with Marty Jr. and refuses Griff's offer, but Griff goads Marty into a fight. Griff and his gang are arrested, saving Marty's future children.

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