Hall moved from Six Feet Under to the title role for all eight original seasons, then returned in New Blood, narrated Original Sin, and led Resurrection.

Paramount+ announced him for Resurrection season 2 in July 2026. His other work includes theater, The Crown, Safe, and music with Princess Goes.

Carpenter played Dexter's sister Debra throughout the original run and returned in New Blood as a figure in Dexter's mind. The Exorcism of Emily Rose preceded the series.

Later credits include Limitless, The Enemy Within, A Mouthful of Air, Ballistic, and voice work as Sonya Blade in animated Mortal Kombat films.

Zayas portrayed Miami detective Angel Batista in all eight seasons and returned to the franchise in Resurrection season 1.

A former New York police officer, he had already appeared on Oz. Later screen work includes Gotham, Blue Bloods, Deadly Class, The Bear, and independent film and stage projects.

Remar played Dexter's adoptive father Harry throughout the original series, usually through memory and internal guidance. His earlier résumé ranged from The Warriors to Sex and the City.

He returned for Resurrection season 1 and was officially listed again for season 2, alongside later work in Oppenheimer and Welcome to Derry.

Lee played forensic specialist Vince Masuka throughout the original series and returned in Resurrection season 1.

Earlier work included The Sopranos and Chuck; later credits include True Detective, Warrior, For All Mankind, and Avatar: The Last Airbender. His résumé spans comedy, procedural drama, martial-arts history, and fantasy.

Harrington joined in season 3 as detective Joey Quinn and remained through the finale. His earlier films included The Hole and Wrong Turn; later television work includes Gossip Girl, Elementary, Shooter, and Manhunt.

Paramount+ named him as a returning regular for Resurrection season 2, now identifying Quinn as a lieutenant.

Benz played Rita from season 1 through season 4, with a later archival appearance. Buffy the Vampire Slayer and Angel had already established her genre profile.

After Dexter she starred in No Ordinary Family and Defiance and appeared in Hawaii Five-0, Training Day, Love, Victor, and numerous television films.

King portrayed Sergeant James Doakes in the first two seasons and later appeared through reused or memory material. He had previously worked in Oz and major films including Casualties of War.

Subsequent public credits include Burn Notice, Banshee, The Oath, and guest television roles, plus voice and stage work.

Vélez played police leader María LaGuerta for the first seven seasons. New York Undercover and Oz preceded the role.

Later she appeared in How to Get Away with Murder, Blue Bloods, and Transformers: Rise of the Beasts and voiced Rio Morales in the Spider-Verse animated films, reaching a new generation.

Pierson recurred throughout the original run as senior police official Tom Matthews. His long television résumé already included Unhappily Ever After and 24.

Later work includes Boardwalk Empire, Castle, Grace and Frankie, Designated Survivor, Splitting Up Together, and Bosch, with authority roles appearing across very different tones.

Lithgow joined season 4 as Arthur Mitchell and won an Emmy for the guest performance, later revisiting the character briefly in New Blood and Resurrection.

His career also includes 3rd Rock from the Sun, The Crown, Perry Mason, Killers of the Flower Moon, and Conclave, plus acclaimed stage and children's work.

Smits played assistant district attorney Miguel Prado in season 3, adding a single-season counterpart to Dexter. A.

Law, NYPD Blue, and The West Wing. Later roles include Sons of Anarchy, 24: Legacy, How to Get Away with Murder, In the Heights, and East New York.

Stiles joined season 5 as Lumen Pierce and received Emmy and Golden Globe nominations for the guest arc. Ten Things I Hate About You and the Bourne films preceded it.

Later she led Riviera, appeared in Hustlers and Orphan: First Kill, and made her feature directing debut with Wish You Were Here.

Strahovski played Hannah in seasons 7 and 8 after gaining recognition on Chuck. She later starred in 24: Live Another Day, The Astronaut Wives Club, The Handmaid's Tale, The Tomorrow War, and Teacup.

Her Handmaid's Tale work brought multiple Emmy nominations and a demanding long-form dramatic showcase.

Alcott joined the franchise in New Blood as the older Harrison, Dexter's son, and returned in Resurrection. His earlier work included The Good Lord Bird.

Paramount+'s July 2026 announcement confirmed him for Resurrection season 2, making his character a bridge between the original family history and the current continuation.