The boy at the Battlements

This individual was a student at Hogwarts School of Witchcraft and Wizardry, and was sorted into Ravenclaw. He fought during the Battle of Hogwarts against the Death Eaters in The Quad battlements, alongside Remus Lupin and Nymphadora Tonks, and because he was with them he most likely witnessed their deaths. It is unknown if he survived the battle.