Tenkuu no Shito

Tenkuu no Shito (天空の使徒, lit. Apostles of the Sky) is a team in the third game (only Spark version) that can be optionally challenged after you beat it. They also appear in the third season of the anime. Their captain is Sein.

Game
In the game, Sein and his people have liven on Liocott Island for 1000 years, protecting it.

Anime
In the anime, the angels of Tenkuu no Shito have fought against Makai Gundan Z many centuries prior to the series to seal away a demon lord, and their task is to keep it sealed.