Carles Montoliu is a Spanish voice actor primarily known for his work in Catalan and Spanish dubs of animated series and films, including a substantial number of anime titles. He is based in Catalonia, Spain, where he works extensively for dubbing studios that produce versions for both the Catalan and Spanish markets. Montoliu's vocal range allows him to portray a wide variety of characters, from energetic teenagers to mature adults, making him a versatile presence in the industry.

His career is marked by a significant number of prominent roles in globally popular anime series. He is best known for voicing Yu Nishinoya, the energetic and talented libero of Karasuno High School, in the Catalan and Spanish dubs of the Haikyu!! anime series. This role is noted for capturing Nishinoya's signature high-energy personality and distinctive vocal ticks, endearing him to fans of the Catalan and Spanish versions. He also voices Kenma Kozume in the same series, demonstrating his ability to perform contrasting characters within the same project.

Beyond Haikyu!!, Montoliu has voiced several other iconic anime characters. He is the Catalan voice of Son Goku in various Dragon Ball productions, including Dragon Ball Z Kai and several of the recent Dragon Ball Super films, such as Dragon Ball Super: Broly and Dragon Ball Super: Super Hero. This role is particularly high-profile, as he voices the protagonist in one of the most famous anime franchises in Spain. He also provides the voice for Killua Zoldyck in the Catalan dub of Hunter x Hunter, a role that requires a wide emotional range from cold-blooded assassin to loyal friend.

His work extends to other major anime series. Montoliu voices Meliodas, the captain of the Seven Deadly Sins, in the Catalan version of The Seven Deadly Sins, and Shoto Todoroki in My Hero Academia. In the world of film, he has lent his voice to characters in numerous Studio Ghibli movies dubbed into Catalan, including Pazu in Laputa: Castle in the Sky and Shun in From Up on Poppy Hill.

Given the structure of the dubbing industry in Spain, Montoliu frequently collaborates with the same dubbing studios and directors. His recurring roles in long-running series like Dragon Ball and his participation in major projects dubbed in Barcelona, such as those for Netflix and other distributors, place him among the most active and recognizable voice actors in the Catalan dubbing scene. His achievement lies in his consistent and high-quality work, contributing to the accessibility and popularity of anime for Catalan and Spanish-speaking audiences.