Oberdan Júnior is a Brazilian actor and voice actor, born Oberdan de Souza Gonzalez Júnior on November 28, 1970, in Rio de Janeiro, Brazil. He began his artistic career as a child performer, using the stage name Dan Jr., with his first appearance on television in the 1980 Rede Globo telenovela Coração Alado. Throughout the 1980s and 1990s, he built a notable career as an on-screen actor in numerous Brazilian telenovelas and series. However, he is most prominently recognized for his extensive and influential work as a dubbing artist, specializing in voicing child and adolescent characters in Brazilian Portuguese versions of international productions.

His dubbing career began in the 1980s and has since encompassed a vast array of iconic roles across animated series and films. Among his most celebrated performances is the voice of the title character Tintim in the animated series As Aventuras de Tintim and its subsequent film adaptation. He is also widely known as the voice of Leitão (Piglet) in numerous Winnie the Pooh productions, including films like Leitão: O Filme and Tigrão: O Filme. Other prominent Disney roles include the teenage Hércules in the film and television series Hércules, Thomas the raccoon in Pocahontas, and Tico in Tico e Teco: Os Defensores da Lei (Chip 'n Dale: Rescue Rangers). His repertoire extends to other classic characters such as Ma-Ti in Capitão Planeta (Captain Planet and the Planeteers), Geninho in She-Ra: A Princesa do Poder (She-Ra: Princess of Power), and Linus van Pelt in productions of Peanuts.

In the realm of anime and related animation, Oberdan Júnior has contributed his voice to several notable titles. As specified, he voiced the character Alakazan in a new Brazilian dub of the classic anime film Alakazam the Great. His other anime credits include the role of Maximillian Sterling (as his first voice) in Robotech and the corresponding role of Maximilian Jenius in The Super Dimension Fortress Macross. He also provided voices for characters such as Willy Kat in the later episodes of Thundercats, Carlos in Beyblade, and Daniel in both the Transformers television series and the 1986 animated film The Transformers: The Movie. Additional voice work in related genres includes the role of Milo de Venus in Galaxy High School and Nightscream in Beast Machines: Transformers.

Throughout his decades-long career, Oberdan Júnior has become a staple in Brazilian dubbing, with his voice becoming synonymous with many childhood characters for generations of viewers in Brazil. While he has maintained occasional on-screen acting roles into the 2010s and 2020s, his primary legacy and professional focus remain in voice acting, where he is considered one of the country's most notable figures in dubbing for children's and family entertainment. His work demonstrates a long-standing collaboration with major studios like Disney and a consistent presence in bringing globally recognized animated characters to Brazilian audiences.