|Vincent Irizarry as Deimos Kiriakis|
|Days of our Lives|
|Portrayed by||Vincent Irizarry|
|Current status||Former; Regular|
|First appearance||January 18, 2016|
|Last appearance||August 14, 2017|
|Cause/reason||Appeared in flashbacks|
|Created by||Josh Griffith and Dena Higley|
|Introduced by||Ken Corday, Albert Alarr and Greg Meng|
|Alias(es)|| Robert Tasso|
|Died||June 29, 2017|
|Cause of death||Stabbed in the chest with a knife by Nicole Walker|
|Residence|| Kiriakis Mansion 13201 Glen Oaks Drive Salem, Illinois (formerly)|
Apt 623, Salem, U.S.
|Mikandrew Perdaris as Young Deimos|
In the Summer of 2015, it was announced that All My Children alumni Vincent Irizarry was coming to Days, and that he would play a character related to a major family. It was mainly speculated that he would be either be part of the DiMera family or the Kiriakis family. For awhile, the character's name was revealed as just "Deimos", but as the time moved closer to his first onscreen date, he was revealed to be a Kiriakis and the never before mentioned paternal half-brother of Victor Kiriakis.
In early 2017, it was announced that an actor that had appeared on the show within the last two years was leaving. The primary candidates were, Thaao Penghlis (Andre DiMera), and A Martinez (Eduardo Hernandez). In the end, Martinez was let go in May, and soon Irizarry was revealed to be leaving his role as well sometime in 2017. His character was killed off on June 29 2017.
When Paul Telfer (Xander Cook), left the show, some of his planned stories were given to Deimos. Brought on as the vengeful half-brother of Victor Kirikais, Irizarry was no stranger to playing a villain as he was notorious for portraying the villainous Dr. David Hayward on All My Children.
After a few months of his vengeful deeds, during which time Deimos was involved in a romantic relationship with Kate Roberts (Lauren Koslow), Deimos' character was seemingly rewritten to be a viable long term character as he made peace with his family and ended up being paired with Nicole Walker (Arianne Zucker).
After a one one night stand with Chloe Lane (Nadia Bjorlin), Deimos was seemingly going to be given a child to give him stronger ties to the canvas, but it would ultimately be revealed that Chloe would be carrying the child of Nicole and the deceased Daniel Jonas (Shawn Christian).
Near the end of October, Deimos returned to his old ways when he lied to his family and faked Xander's death. Deimos villainy even extended to members of the Kiriakis family as shown when he kidnapped and drugged his nephew Philip Kiriakis (John-Paul Lavoisier.
In the new year of 2017, Irizarry was let go from the soap, and Deimos' villainy only got worse as he threatened the lives of Dario Hernandez (Jordi Vilasuso), Andre DiMera (Thaao Penghlis), Chad DiMera (Billy Flynn), Gabi Hernandez (Camila Banus), Abigail Deveraux (Marci Miller), and Drew Donovan (Charles Shaughnessy) and his wife. This would lead him into direct conflict with his great-nephew Sonny Kiriakis (Freddie Smith, who had a personal connection to Chad, Abby, and Gabi.
Deimos' fall from grace began after Deimos' actions led to Victor's grandson, Brady Black (Eric Martsolf), nearly dying. Deimos was kicked out of his family and removed from his position as CEO of Titan. He began plotting one final scheme to drug a party that nearly all his enemies would be attending in order to steal a priceless amulet from Sonny. However this plot would be his last. At the end of the night, he finally met his end when he was accidentally stabbed to death during a struggle with Nicole while she was drugged and left to die in the living room floor of the Martin House.
A backstory was created for Deimos and Victor, involving a woman named Helena Tasso (Arianne Zucker). It would then strongly be implied that Victor had married Nicole because of her resemblance to Helena. However, the biggest two ways Deimos changed the show forever was his indirect contributions to the end of veteran characters Bo Brady (Peter Reckell) and Stefano DiMera (Joseph Mascolo). Deimos had kidnapped and tortured Bo, which caused his tumour to go untreated, resulting in his death shortly after reuniting with his family. Stefano was originally assumed to be behind Bo's capture, especially after the way he conveniently inserted Aiden Jennings (Daniel Cosgrove) into the life of Bo's wife, Hope Brady (Kristian Alfonso). This led to Hope shooting Stefano, resulting in his final onscreen death, and Deimos, albeit indirectly, playing a small role in the end of Days greatest villain, although this would later be somewhat retconned, leaving Stefano's final fate ambiguous.
Irizarry has been praised for his portrayal as Deimos, and the chemistry he shared with Lauren Koslow and Arianne Zucker. Many fans felt he could successfully succeed Stefano DiMera as Days primary antagonist, but the character received some backlash when it was revealed he was responsible for Bo's torture and eventual death, especially when Bo's loved ones forgave him, and didn't pursue justice against him, even after knowing what Deimos had done to Bo. This only got worse when Victor, knowing to hold a grudge against people who hurt his family, ignored the fact that Deimos had also kidnapped and drugged Philip. He defended Deimos, and a furious Philip left Salem while Deimos was allowed to stay on control of Titan, and was never punished for it.
Many fans were saddened when Irizarry was announced to be leaving the show, and all the damage that had been caused by Deimos' arrival was undone with Victor finally kicking Deimos out of the family after his actions nearly caused the death of Victor's grandson, Brady Black, and Hope was finally written to want justice for Bo's death against Deimos. In the end, Deimos finally met his maker when he was fatally stabbed by a drugged Nicole. Hours after his demise, his dead body was found by Gabi Hernandez at the Martin House living room.