The Gnome King is a character from the Oz series, particularly featured in the book "The Wonderful Wizard of Oz" by L. Frank Baum. He rules over the Gnome Kingdom, a subterranean realm filled with treasures and magical items. The Gnome King is known for his ability to turn people into stone and his desire to reclaim his lost magic. In the story, the Gnome King becomes an antagonist when he seeks to capture Dorothy and her friends. His character represents themes of greed and the consequences of power. Ultimately, he is defeated through cleverness and teamwork, highlighting the importance of friendship and bravery.