Mood Maid first appeared after she secretly boarded a Space Coupe on the moon and flew back to Earth with Diet Smith . She wore a sleeveless and strapless black leotard, thigh high boots, and a pearl choker necklace. Upon discovering the beautiful stowaway, Diet called Dick Tracy and Lizz to his plant to meet the alien woman. Tracy immediately dubbed her "Moon Maid" , and the name stuck.