Josu Varela is a Spanish voice actor known for his work in anime dubbing, primarily for the Spanish and Basque languages. His career encompasses a wide range of roles across various genres, from mainstream action series to more adult-oriented animated productions.

Varela has contributed to the Basque-language dubs of several major anime franchises. Notably, he voiced the character Paragus in the film Dragon Ball Super: Broly. His work in the Dragon Ball universe also includes providing the Basque voice for the villain Pilaf in the films Dragon Ball Z: Battle of Gods and Dragon Ball Z: Resurrection 'F', as well as voicing Android 17 in the Dragon Ball Z Kai television series. He is also the Basque voice of Hayato Honda in the long-running comedy series Kochira Katsushika-ku Kamearikouen-mae Hashutsujo, also known as Kochikame. Other Basque dub roles include Gorm and Ulme in Vicke the Little Viking, Tristan Taylor in the Yu-Gi-Oh! movie, and Wolf Woods in Megaman Star Force.

A significant portion of Varela's career is in Spanish dubs for anime, particularly original video animations (OVAs) produced for adult audiences. He has frequently collaborated with the Spanish dubbing studio Llamentol, which specializes in localizing this genre of anime. For Llamentol, Varela has voiced leading and supporting characters in numerous series, often taking on the role of the male protagonist. Examples include Takuro Hayami in Discipline: The Hentai Academy, Tomoki in Kawarazaki-ke no Ichizoku 2, Shin Kazahara in Dirty Thoughts, Mitsuya Kamishiro in Professor Pain, Makoto in Midnight Sleazy Train, Tomohiro Takabe in Sexfriend, and Ogawa in Viper GTS.

Beyond these genres, Varela's Spanish dub filmography demonstrates his versatility with roles in more mainstream and classic titles. He provided the new Spanish dub voice for Ryoga Hibiki and Dr. Tofu in Ranma ½, as well as Sasuke Sarugakure in the same series. He also voiced Tristán, known as Shu Rei Fuan in the original, in Legendary Armor Samurai Troopers. Other credits include roles in Slam Dunk, The Irresponsible Captain Tylor, Rune Soldier, and the narrator for Anne of Green Gables.