Lord Monochromicorn is the fictional gender-swapped version of Lady Rainicorn created by the Ice King in his fanfiction story, as seen in "Fionna and Cake." He is the loyal companion of Prince Gumball and the boyfriend of Cake The Cat. He communicates by using his hoof like a telegraph to communicate with Morse Code, rather than by speaking Korean, as Lady Rainicorn does. (He stomps his hoof for a dot and scratches the floor like a line for a dash.) Cake can understand him clearly.