Juan Logar Jr. is a Spanish voice actor known for his work in the Spanish dubbing of various anime series and films. His career encompasses a range of characters in both animated and live-action productions adapted for a Spanish-speaking audience.

Logar Jr. has voiced characters across several prominent anime franchises. He is credited as the European Spanish voice for the character Koichi Ishizaki in the series BNA: Brand New Animal. He also voiced the role of Xiao Ming in the anime film Flavors of Youth. His work includes multiple entries in the Touch franchise, where he provided the voice for Akio Nitta in the special Touch: Are kara, Kimi wa... - Miss Lonely Yesterday - and several related movies.

A significant portion of his voice acting credits are within the long-running Pokémon anime series and films. Logar Jr. has voiced numerous characters in the Spanish adaptation of the Pokémon universe, including the roles of A.J., Braggo, and Captain Aidan in the original series, as well as Harley in Pokémon Advance and the character Looker, also known as Handsome, in both Pokémon: Diamond and Pearl and Pokémon: Black and White: Rival Destinies. His film work in the franchise includes voicing characters such as Cullen Calix in Pokémon: Mewtwo Returns, Freddy in Pokémon: Lucario and the Mystery of Mew, Mr. White in Pokémon 4Ever, and Kevin in Pokémon: Arceus and the Jewel of Life. He also voiced Fergus in the first Pokémon movie.

Beyond these, his portfolio demonstrates range with roles in other classic and contemporary series. He is credited as the voice of Gourry Gabriev and several other characters across The Slayers, The Slayers Next, and The Slayers Try. His work also includes roles in Flint: The Time Detective, Mushiking: The King of Beetles, and the Spanish dub of Yu-Gi-Oh!. In addition to anime, Logar Jr. has contributed to the dubbing of live-action films, such as voicing the lead character Tetsuya Azuma in the Spanish version of the movie Casshern, and providing the Spanish voice for Tom Wachowski in the Sonic the Hedgehog live-action films. He also served as the ADR director and script writer for the Spanish dub of the live-action film Casshern.