The second season of Apple TV+’s sci-fi thriller Dark Matter introduced a pivotal new figure in its latest episode, casting veteran actor Gil Birmingham as a key piece of the Dessen family history. In Season 2, Episode 6, titled “What the Universe Is Made Of,” Birmingham appears as Gabriel Vargas, the father of Daniela Dessen (Jennifer Connelly).
Premiering on October 2, 2026, the episode utilizes the show’s multiversal premise to facilitate an emotional meeting that would be impossible in Daniela’s original timeline. In her home reality, Gabriel Vargas is deceased, but the narrative finds Daniela encountering a version of her father who is very much alive in an alternate world.
A Multiversal Family Reunion
The encounter takes place at a remote family cabin, a setting that underscores the personal stakes of the multiverse for the Dessen family. As Daniela searches for a sense of grounding amidst the chaos of shifting realities, her interaction with Gabriel provides a rare moment of vulnerability. However, the reunion is tempered by the logic of the series; Gabriel eventually realizes that the woman standing before him is not the Daniela belonging to his specific reality.
In Dark Matter, the chemistry between Birmingham and Connelly is used to anchor the high-concept physics of the “Box” in a grounded, domestic tragedy. According to reporting on the episode’s plot, the introduction of Gabriel Vargas serves as a catalyst for Daniela’s own journey through the multiverse as she continues to navigate the consequences of Jason Dessen’s inventions.
Gil Birmingham’s Expanding Television Presence
Birmingham’s arrival in the Dark Matter universe comes at a particularly busy moment for the actor. Known widely for his role as Thomas Rainwater in Yellowstone, Birmingham is currently fronting the spinoff series Marshals. The timing of his guest turn is notable, as the second season of Marshals is scheduled to premiere on October 4, 2026, just two days after his Dark Matter debut.
His portrayal of Gabriel Vargas adds a layer of gravitas to the “What the Universe Is Made Of” storyline, which also sees other members of the Dessen family dealing with the psychological toll of the Box. While Birmingham is primarily recognized for his work in Westerns and prestige dramas, his move into high-concept science fiction highlights the series’ focus on character-driven storytelling over pure spectacle.
As Season 2 of Dark Matter progresses, the repercussions of Daniela’s meeting with Gabriel are expected to influence her perspective on which reality—if any—truly constitutes “home.” For Birmingham, the role serves as a brief but impactful detour before he returns to the law-and-order landscapes of the Yellowstone franchise.
