|Ignacio Serricchio as Diego Alcazar|
|Portrayed by:|| Ignacio Serricchio|
|Duration:|| 2004-2006 & 2008|
|First appearance:|| October 1, 2004|
|Last appearance:|| March 6, 2008|
|Created by:|| Robert Guza Jr. |
Charles Pratt Jr.
|Family:|| Alcazar family |
|Other names:|| Diego Sanchez (name at birth) |
|Died:|| March 6, 2008|
|Cause of death:|| Accidental hanging|
|Residence:|| Alcazar Mansion |
243 Sky Cliff Road
Port Charles, New York
- Ignacio Serricchio (09/2004-11/2006; contract & 02/2008-03/2008; recurring)
- Presumed deceased November 17, 2006 to February 22, 2008
Diego arrived in town in September 2004 as the foster son of Courtney Matthews. Diego has a thing for Courtney but soon met Brook Lynn Ashton. Diego and Brook Lynn soon started dating. Diego and Brook Lynn along with Brook Lynn's uncle Dillon Quartermaine and his girlfriend Georgianna "Georgie" Jones left town in search of Maria.
Soon after Diego was reunited with Maria the truth came out and Maria revealed that she was his biological mother and that mobster Lorenzo Alcazar was his father. Diego starts to get to know his father Lorenzo and started getting into Lorenzo's business. Diego and Brook Lynn's relationship later fell apart because she didn't like that changes in Diego as well, Diego started having fellings for Georgie's older sister Mariah Maxmilliana "Maxie" Jones. The two broke up and Brook Lynn left town.
Diego was later sent to prison when it was revealed that he had been slipping date rape drugs of Brook Lynn and well as Maxie. Diego then admitted that he had done it fot avenge his cousin Sage Alcazar, for the treatment that the girls has done to Sage.
While in prison, Diego maintain in connect with Georgie few letters. Diego begun to fall in love with Georgie. After being released from prison, Diego teamed up with Lesley Lu "Lulu" Spencer with brake up Georgie and Dillon's marriage because Lulu wanted Dillon and Diego wanted Georgie.
Diego and Georgie's relationship never went anywhere. Diego then started working for his father criminal organization. But on his first job, Diego came up against Jason Morgan and Samantha "Sam" McCall. But Sam managed shot him first. Diego was believed to have died.
About a year and half later, murders started happening and the murderer was labeled the Text Message Killer. It later revealed that Lorenzo has saved Diego and fake his father. After killing Leticia Juarez, Emily Quartermaine, Georgie Jones and Cooper Barrett and attempted murder of Caroline "Carly" Benson, Alexis Davis, Sam McCall and Elizabeth Webber is was revealed to Diego was alive and was the Text Message Killer.
Diego died during a Nikolas Cassadine, a rope got caught around Diego's neck during and Diego accidentally hung himself when he fell off a platform.