Imaginary languages are a specific case within artificial languages. Although they are also a personal creation, they are not used as languages in reality, but inside a literary work. Their use has proliferated in the 20th century, especially within genres like epic fantasy or terror. This paper analyses three works where we can find imaginary languages with different characteristics. Nevertheless, they all share a number of similarities: the imaginary language appears together with its translation into Spanish, works as a metalanguage and has parodic features. The article discusses the possible difficulties which these languages pose for translators.