Hitoshi Shinsou is a stoic and straightforward person with an innate ability to spark conversation with anyone despite holding a reserved and quiet attitude most of the time. He is shown to be rather clever, knowing just the right words to manipulate others into replying to his comments, allowing him to activate his Quirk. Due to having his Brainwashing Quirk perceived as evil throughout his life, Shinsou has been somewhat feared by those aware of his power and has been discriminated against.