Atsuhiro Sako, also known as Mr. Compress, is a villain and member of the League of Villains. Mr. Compress oftens refers to himself as an old man despite just being 30. He is a man of humor with a talkative nature. He respects the idea of having to choose your own values, rather than have them be given from others. He is a showman who likes to command every event he's a part of and be as flashy and entertaining as possible. He is talkative, humorous, and arrogant. a habit of monologuing.