Not much is known about Arturo except for the fact that he is Ramirez's son and that his birthday occurred during the events of Out of Breath.
Events of Criminal Case
After arresting Doris Black's killer, Ramirez asked Jones and the player for their help in finding some habanero peppers so that Ramirez could make some pico de gallo for Arturo's birthday. After finding the peppers, Ramirez created the pico de gallo. They then went to Rita to test the pico de gallo on her, who was clearly overwhelmed by the dish's spiciness.