El Escudero, or the squire, is a character archetype found in Spanish literature, particularly in the context of 'Lazarillo de Tormes.' This figure typically serves as an assistant or apprentice to a knight and represents the social class below the nobleman. In 'Lazarillo de Tormes,' El Escudero embodies themes of appearance versus reality, as he projects an image of nobility and wealth while being impoverished himself.