First vampire portrayed by Gabriel Braga Nunes. His antagonist in The Mutants: Ways of the Heart (2008) was also turned into a vampire, which would result in "O Beijo" creator Antônio Calmon suing Tiago Santiago for plagiarism.
Cláudia Raia's pregnancy was incorporated into the script. After her daughter Sophia Raia Celulari was born, Raia would put on her character make-up still at home. Raia also had her filming schedule reduced, so she would be able to breastfeed.
Seven fiberglass medieval armors were made for the Ancient period scenes. The one worn by Tarcísio Meira weighed 17ibs.