Olimpia Mercouri de Villanueva

María Joaquina Crespo, better known as Olimpia Mercouri de Villanueva, is the main antagonist in the Venezuelan telenovela Mi Gorda Bella (My Sweet Fat Valentina), who was produced by RCTV. She is portrayed by Hilda Abrahams.

She is the mother of Orestes Villanueva, the husband of Juan Ángel Villanueva, and the aunt-in-law of Valentina Villanueva, who she hates much.