It's time to meet more new faces taking over fan-favorite characters on Dexter: Original Sin.

The Dexter prequel series has cast Christina Milian, James Martinez, and Alex Shimizu in younger versions of the original show's characters, Entertainment Weekly has learned. Plus, Reno Wilson joins the Paramount+/Showtime drama in a new role.

Set in 1991 Miami, 15 years before the original show, Dexter: Original Sin follows the titular Dexter (originally played by Michael C. Hall, but here portrayed by Shadow and Bone's Patrick Gibson) before he became the prolific serial killer. When Dexter's bloodthirsty urges can’t be ignored any longer, his father Harry (Christian Slater, taking over for James Remar) helps him adopt the Code designed to help him find and kill people who deserve it, keeping his younger sister (originally portrayed by Jennifer Carpenter, but now played Molly Brown) in the dark. But evading the attention of law enforcement proves to be a challenge as he also begins a forensics internship at the Miami Metro Police Department.

Kristy Sparow/Getty; Randy Tepper/Showtime/courtesy Everett

Singer/actor Milian (Step Up: High Water, Falling Inn Love) takes over the role of Maria LaGuerta, Miami Metro Police Department’s first female homicide detective. In the original show, the character goes on to become lieutenant and then captain, and was portrayed by Luna Lauren Velez until Maria's shocking death in season 7.

Phillip Faraone/Getty; Randy Tepper/Showtime/courtesy Everett

Martinez (Love, Victor) will portray Angel Batista, an up-and-coming homicide detective who leads with his heart. David Zayas originally played the role throughout the entire run of Dexter and in an appearance in the controversial spinoff sequel Dexter: New Blood.

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JB Lacroix/WireImage; Randy Tepper / Showtime / Courtesy Everett

Shimizu (The Blacklist) will play the younger version of Vince Masuka, a forensic analyst who eagerly shares his expertise while relishing the chance to boss around his new intern, Dexter. C.S. Lee originally played Vince throughout all eight seasons of Dexter.

Warren Alfie Baker/Getty

Meanwhile Wilson (Mike & Molly) has been cast in the new role of Bobby Watt, Harry’s longtime partner and confidant.

Production begins Wednesday in Miami, with Dexter showrunner and executive producer Clyde Phillips returning at the helm.

Dexter originally ran for eight seasons, from 2006 to 2013, on Showtime, winning four Emmys along the way. Hall reprised his titular role in 10 episodes of a sequel series, Dexter: New Blood, which aired 2021-2022 and was the most-watched series in Showtime history.