Heitor Assali is a Brazilian voice actor known for his extensive work in dubbing anime, video games, and live-action series for the Brazilian Portuguese market. He was born on March 1, 1992. His interest in the profession began in his youth, sparked by an interview with the voice actors from the Pokémon anime, which led him to research the field and develop a passion for dubbing. He pursued this path by participating in school theater, attending university to obtain his acting certification, and eventually establishing himself as a professional voice actor.

Assali has built a notable career with a wide array of roles in popular anime series and films. He is the voice of Sonic, also known as Speed-o'-Sound Sonic, in the series One Punch Man. He also voices Gamma 1 in the film Dragon Ball Super: Super Hero and Keisuke Baji in Tokyo Revengers. His work in the My Hero Academia franchise includes voicing the character Eijiro Kirishima in the films My Hero Academia: Two Heroes and My Hero Academia the Movie -Heroes: Rising-. He also voiced Bill in the anime BEASTARS. His other prominent roles in anime and animation include Yui in Kemono Jihen, Reno Ichikawa in Kaiju No. 8, Sentaro Kawabuchi in Kids on the Slope, Allix in Pokémon: Paldean Winds, and Sanemi Shinazugawa in Demon Slayer: Kimetsu no Yaiba. He also provided the voice for the character Lexy in the Netflix animated series Neo Yokio and its special, Neo Yokio: Pink Christmas. Beyond anime, he voiced Luche Lazarus in the CGI film Kingsglaive: Final Fantasy XV and Tatsuyoshi in the animated film Mai Mai Miracle.

In addition to his extensive work in animation, Heitor Assali is also active in dubbing live-action content, particularly Korean dramas. He is the regular Brazilian Portuguese voice for South Korean actor Seo In-guk, having dubbed him in series such as Doom at Your Service and Cafe Minamdang. He has also voiced characters in other dramas like Descendants of the Sun and Bloodhounds. His voice work extends to video games, where he is known for roles such as Sova in Valorant, Owen in The Last of Us Part II, and Blue Beetle in Injustice 2. In live-action television, he has dubbed Ryan in the series Station 19 and the Blue Power Ranger in Power Rangers Ninja Steel.

Assali often collaborates with various dubbing studios, including those based in both São Paulo and Rio de Janeiro, such as Som de Vera Cruz. He has expressed a deep appreciation for the craft of dubbing, citing the joy of interpreting diverse characters and the challenge of adapting performances from different languages and cultures, including the distinct musicality of the Korean language. He notes that while he enjoys the work, the schedules can be demanding, recalling an instance where he dubbed approximately ten episodes of a drama in a single week. His work has been recognized for its quality, with fans and commentators noting how well his voice matches the on-screen personas of actors like Seo In-guk.