Making a Finn costume is incredible easy. This short guide gives you all you need to make a Finn costume. Together Finn and Jake embark on crazy adventures. There are also many places where you. Katniss Everdeen is the protagonist of the Hunger Games book series. PT on Oct. 8, 5 a.m. Finn, one of the last humans, was found in the woods at infancy and taken in by Jake’s parents.