Marco Ruiz is a fictional character from the television series The Bridge. He is a detective working for the El Paso Police Department in Texas. Marco is known for his dedication to solving crimes and his complex personal life, which often affects his work. Throughout the series, Marco collaborates with Sonya Cross, a detective from the FBI, to investigate a series of murders that occur on the border between the United States and Mexico. His character explores themes of morality, justice, and the challenges faced by law enforcement in a divided society.