[2] He is known for playing Dadinho (Li'l Dice) in the 2002 Brazilian film, City of God.

He made his acting debut playing Dadinho in the epic action film City of God (2002), for which he was nominated for the Grande Otelo for Best Supporting Actor at the age of 15 and won the best actor award at the Havana International Festival.

[5] He became famous for playing the childhood of the criminal Dadinho in the Oscar-nominated film City of God, in 2004.

He also gained notoriety for playing Acerola in the series Cidade dos Homens, on TV Globo.

[9] On January 14, 2022, Douglas was confirmed as one of the 20 participants in the twenty-second season of the reality show Big Brother Brasil, on TV Globo.