|Full name||Oscar Rojas|
|Cause of death||Poisoning|
|Partner(s)||Olga Chizhova (girlfriend)|
Unnamed synchronized swimmer
|Appears in||Criminal Case|
|First appeared||Case #47: Cheaters Never Win (s3)|
Oscar was an Olympic athlete representing Luzaguay. He had faded brown hair and stubble, and yellow eyes due to being experimented upon by SOMBRA. At the time of his death, he donned a red shirt with a name tag and black shorts.
Oscar was found at Copacabana Beach with a syringe in his neck. According to Grace, he died to a lethal dose of ayahuasca mixed with brugmansia. Michelle pointed out that ayahuasca could not have killed anyone alone due to it mainly being a hallucinogenic drug. Which is why Grace pointed out mixing it with brugmansia would make it deadly, labeling the drug combination as the murder weapon. She also pointed to bruises on the lower region of the victim's leg, which suggested he was knocked to the ground by a swift kick to the legs. The bruise patterns were consistent with the Brazilian martial art, capoeira, this meant the killer did capoeira.
Killer and motives
The killer turned out to be a Brazilian Olympic athlete named Edson Caetano.
After denying involvement, Edson admitted to the crime. When he had discovered that Oscar was doping himself, Edson did not want him to win the gold. At the favela bar, Edson had been approached by mysterious men who had given him ayahuasca to inject Oscar with and reduce the latter's performance, allowing him to win the gold. Edson had obeyed, without knowing that the syringe's contents were deadly. Judge Adaku sentenced him to 5 years in jail.
After the trial, Carmen accompanied Michelle and the player to interrogate Edson and find out about who had given him the drugs. Edson did not remember anything about those men, so the team looked for clues at the favela bar, where they found some of Edson's drugs. Lars and Elliot discovered priestess Janaína de Iemanjá's fingerprints on the drugs.
Michelle and the player interrogated Janaína, who claimed to have seen the same men who gave the drugs to Edson approach to other athletes at the stadium. In the stadium, the team found a keychain which (per Elliot) belonged to O.M. MediLab, the SOMBRA front the team had found in South Asia. The team concluded that SOMBRA had sent the mysterious men via O.M. MediLab to manipulate Edson into killing Oscar.