Blue Keeper

Aoshima Sakugo stands as the commander of the Blue Unit in the 'Grand Squadron'. Raised in an orphanage, he once made his living as a violent robber before being guided into the squadron by the Red Keeper. Despite his explosive temper and cutting words — earning him a reputation as the 'worst hero' — he privately holds his comrades in deep regard and harbors a sincere affection for small animals. Beneath his harsh exterior lies a genuinely warm spirit, backed by formidable combat ability that makes him a force to be reckoned with among the Keepers.