Juan Carlos Lozano is a Spanish voice actor known for his extensive work in dubbing animated series, films, and video games into Castilian Spanish. His career is characterized by a wide vocal range, allowing him to portray characters from heroic leads to villainous antagonists across various genres.

Lozano is particularly recognized for his contributions to the Transformers franchise. He provided the Spanish voice for the Decepticon leader Megatron in several animated series, including Transformers: Armada, Transformers: Energon, and Transformers: Cybertron. His role as Megatron extended to video game adaptations such as Transformers: War for Cybertron, Transformers: Dark of the Moon, and Transformers: Prime - The Game. In Transformers: Energon, he also voiced the character Skyblast.

Beyond the Transformers universe, Lozano's dubbing portfolio includes prominent roles in other popular anime series. He is known for being the voice of Leomon in Digimon and the Narrator and Genzo in the long-running series One Piece. He also voiced Grumblemon in Digimon Frontier and Woodman in the Megaman animated series.

His work is not limited to animation; Lozano has also voiced numerous characters in video games. Notably, he is the Spanish voice for several champions in the globally popular game League of Legends, including Sion, Jax, Brand, and Galio. His other video game credits include roles in the Call of Duty and Max Payne franchises.

In addition to his extensive work in animation and video games, Lozano has been active in dubbing live-action productions and has lent his voice to numerous advertising campaigns. An analysis of his career reveals frequent collaborations with other Spanish voice actors, with Salvador Serrano being his most frequent professional partner.