Simms is a middle-aged Hispanic man with slightly spiked black hair and is usually seen wearing an orange shirt, somewhat like Robert Ramos. He appears to be a physically fit man, making him more of an imposing member on the force than a typical background character.
Unlike most of the background detectives, Simms actually speaks on several occasions. During the Ice Truck Killer Case, he offers constructive criticism on how to pursue the case. He also represents the other officers feelings during the change in authority from Maria LaGuerta to Esmee Pascal.
- His name was revealed, along with a reconfirmation of Michael Soderquist's full name, in "Chemistry" when Maria LaGuerta searches a list of Miami Metro Police Department employees.
- "Are You...?"
- "Sunshine and Frosty Swirl"
- "Buck the System"
- "Swim Deep"
- "The Dark...Whatever"
- "Surprise Motherfucker!"