Shinon is a Goose +Anima who first appears in Volume 4 of the series.
Shinon is very thin and has pale eyes. His light colored hair is tied back in a ponytail. In his +Anima form, Shinon's arms become white wings. He is the only person seen in the series whose wings are not located on their back. His Anima markings are similar to Cooro's: a spiral with four feather-like shapes around it. They are located on the backs of his hands.
The gang meets him in Maggie Vil while participating in the battles at Maggie Coliseum. Shinon is one of the many kids who wanted to win a fight and agreed to be Magdala's friend in order of obtain his desire. Somewhere along the way, he regretted his choice and asked to leave, but instead was locked in a dungeon with Cooro and Husky who also refused to comply with Magdala's demands.
After trying (and failing) to escape, Shinon became trapped in the coliseum with two large, lion-like animals. Magdala was most likely going to let them kill him. As he was on the edge of passing out, Shinon noticed white feathers floating down from the sky and looked up to see a flock of water birds flying by. He grew wings and became a +Anima there as he wished to keep his life and fly away from there.
The last we see of Shinon in person is his receding form as he flies away with the geese, though Nana later has a dream about him.