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Finn Mertens, the protagonist of Adventure time, was 10 to 12 years old when the series began on March 11, 2010 but turned 18 in 2017 (the character is now aging in real time, born March 14, 1999).

On Glee, Finn Hudson was 16 years old. However, he was played by the late actor Cory Monteith, who was 27 when the first episode aired, and 31 when he died in 2013.

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8y ago

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