Bercilak「ベルクラク, Berukuraku」, also referred to simply as Cil「ク, Ku」 is the main protagonist of Nanatsu no Taizai: Errant.
- His name is taken from the Arthurian character the Green Knight, in which, among other appearances, he is portrayed as a powerful knight and an exorcist of sorts who often tests the mettle, resolve, and loyalty of his fellow knights.
- According to the databook(s):
- His special skill is hair growing and combing.
- His hobby is collecting green things.
- His daily routine consists of hanging out with his friends or relaxing beside lonely lakes.
- His favorite foods are bread rolls.
- His charm point is his loose-fitting clothes.
- His complex is his 'shaggy' hair.
- The person he respects the most is unknown.
- The person he doesn't want to make an enemy out of is Caradoc.