The Ogre is a minor villain from the adventure game King's Quest I: Quest for the Crown. He is a vicious ogre that roams around to catch you.
Graham encounters the Ogre while wandering in a field near the castle. The Ogre cannot be killed in the game, so Graham has to avoid him. Graham can become invisibe with the magic ring, which will prevent the Ogre from attacking him. However, if he walks into the Ogre while invisible, the ogre will kill him.