Roberto Welker

Roberto Welker is a major antagonist who appears in season three. He is an old friend of Jeffrey Baxter and Leo Koyashi, and the trio are involved in a heist when Jeffrey needs the money to pay for his dying wife's treatment and Roberto apparently needs the money because he owes money to the Reyes crime family. However, Roberto betrays his former friends and gets away with the stolen vault money, fleeing the country to live a peaceful life of wealth and happiness in Italy with his new family while he leaves his partners to the police, resulting in Jeffrey's arrest and Leo's death.