Percival is the main protagonist of the Four Knights of the Apocalypse sequel series. He's one of the Four Knights himself, specifically representing Death. His most distinctive feature is his bright green hair, which sticks up in two wild cowlicks that look kind of like wings.
His family ties run deep into the series lore—he's the son of Ironside and grandson of Varghese. After his grandfather was killed by Ironside, Percival took his cowl and helmet, and now he wears them pretty much everywhere as a way to honor that connection.
Magic-wise, Percival has access to a mysterious power called Hope. It manifests as tiny, chibi versions of himself that pop up to help him out in various ways, with healing being their main function. It's a pretty unique ability that sets him apart from the other Knights.
Content compiled by AnimeList.moe from publicly available sources.
