Atsuhiro Sako (迫さこ圧あつ紘ひろ, Sako Atsuhiro), also known as Mr. Compress (Mr.ミスターコンプレス, Misutā Konpuresu), is a recurring villain affiliated with the League of Villains, was a member of the organization's Vanguard Action Squad, and later became one of the nine lieutenants of the Paranormal Liberation Front.