Alonso began his career hosting the television shows A.M. @BET and NYLA. Alonso has also appeared in music videos by recording artists
Toni Braxton and
Aaliyah. Alonso has had supporting roles in films such as
Stomp the Yard,
Down for Life,
Jarhead,
G, Leprechaun: Back 2 tha Hood,
This Christmas and
Miracle at St. Anna. In 2009, he played Fenix Calderon, the main antagonist in the film
Fast & Furious, the fourth installment in the
Fast & Furious film series. Alonso had a major role as the Na'vi warrior Tsu'tey in James Cameron's science fiction adventure film
Avatar. Alonso played one of the lead characters on the 2011, TV series
Breakout Kings during its first season and the first episode of season two. He has made television guest starring appearances on
The Unit,
Bones,
CSI: Miami,
NCIS,
The Practice and
Eyes. Alonso was the lead in the 2013,
NBC drama
Deception. Alonso also played one of the main characters, Detective Billy Soto, on the NBC series
The Mysteries of Laura. In 2023, he played the protagonist of
My Dad the Bounty Hunter, a dad named Terry who secretly works as a
bounty hunter named Sabo Brok. Alonso briefly reprised his role as Tsu'tey with a
cameo in the 2025 sequel
Avatar: Fire and Ash. ==Personal life==