Daniela Melchior is a Portuguese film and television actress. She made her debut in 2014 in the television series Mulheres. She is known for portraying Cleo Cazo/Ratcatcher 2 in the 2021 film The Squad. She was born on November 1, 1996 in Almada, Portugal. Melchior began her artistic career at the age of 17 in several Portuguese film and television productions, in 2021, Melchior played Cleo Cazo/Ratcatcher 2 in James Gunn's film The Squad (2021), her first English-language film working in the United States.