Doraemon: Nobita and the Green Giant Legend (2008)
Original title: 映画ドラえもん のび太と緑の巨人伝
Doraemon: Nobita and the Green Giant Legend is a 2008 Japanese-language adventure movie directed by Ayumu Watanabe, with a running time of 1h 52m. It stars Wasabi Mizuta, Megumi Oohara and Yumi Kakazu.
A sapling Nobita discovers is turned into a plant-boy with help from Doraemon, and becomes Earth's only hope at passing judgment from the dryadic aliens of the Green Planet.