Shōgo Aoshima (靑あお嶋しま 庄しょう吾ご, Aoshima Shōgo) also known as Blue Keeper (ブルー キーパー, Burū Kīpā) was one of the five Dragon Keepers and leader of the Blue Battalion, before he was killed by the Executive Peltrola, causing Keisuke Sōma to take the mantle of Blue Keeper. He was one of the main antagonists of the Bailong's Nest Arc.