King of Hearts (playing card) is the only king without a moustache
Photo source: Wikimedia
Many of us have played poker and other card games, but people rarely notice the attention to details in a card deck. In standard English card deck King of Hearts is the only king without a moustache
(he definitely is a ladies man). It also appears that he is holding his sword sticking into his head, because of this King of Hearts is sometimes referred as suicide king.