Old Man Prince is the gender swapped counterpart to Old Lady Princess. He was supposed to marry Ice Queen. When Ice Queen tells Fionna and Cake that she is getting married, he is seen riding in a wagon with a bunch of male Penguins who were supposedly taking him to her bachelor party. He was cursed by an engagement ring given to him by the Ice Queen. The ring was spiky, magical, made of ice, and it tricked him into thinking he was in love with Ice Queen -which was not the case. He was then freed from the curse at the wedding, where Cake took off his engagement ring. Then the Ice Queen accidently married Cake instead.