Star Trek: Lower Decks has introduced a significant development for T’Pol (portrayed by Jolene Blalock), positioning her as the latest host of the Dax symbiont. However, the implications of this transformation for both T’Pol and the Dax character remain uncertain, raising questions about future appearances. In the recently concluded fifth and final season on Paramount+, the crew of the USS Cerritos embarked on a mission to investigate a perplexing series of quantum fissures that had inexplicably manifested throughout the galaxy. The pivotal episode titled “Fissure Quest”unveiled that Captain William Boimler (Jack Quaid) and a team of legacy Star Trek characters, often referred to as “interdimensional castaways,”were tasked by Section 31 to uncover the mysteries behind these unstable multiversal connections.
Among Captain Boimler’s eclectic crew were familiar figures from Star Trek’s extensive lore, including T’Pol and Curzon Dax (voiced by Fred Tatasciore), the previous Trill host of the Dax symbiont before it transitioned to Jadzia (played by Terry Farrell) in Star Trek: Deep Space Nine. Despite Curzon’s demise prior to the events of DS9, his presence was felt through Jadzia’s narrative and her friendship with Captain Benjamin Sisko (Avery Brooks). In “Fissure Quest,”Curzon takes on the role of tactical officer aboard Boimler’s Defiant-class starship, Anaximander, showcasing a complex friendship with T’Pol.
How Lower Decks Established T’Pol as Star Trek’s New Dax
T’Pol & Curzon Dax’s Return in the Episode “Fissure Quest”





Within the narrative of “Fissure Quest,”Curzon embodies a philosophy of living life to the fullest, as he actively engages in battles and indulges in less-than-healthy culinary choices. The tension escalates when Lt. Harry Kim (Garrett Wang) takes a drastic step, commandeering Captain Lily Sloane’s (Alfre Woodard) multiverse-jumping starship. Curzon steps up to confront the Khwopians threatening the Anaximander crew. Despite suffering severe injuries during the altercation, Curzon valiantly conceals his condition until he collapses at his station. In sickbay, Dr. Garak (Andrew Robinson) administers treatment but is unable to save him.
As Curzon lies dying, he expresses regret that the legacy of the Dax symbiont will end with him. However, T’Pol offers a glimmer of hope. Through an intense mind meld, she transfers the extensive memories of the Dax symbiont into her own consciousness. While she refers to the experience as “more katra than [she] had anticipated,” T’Pol vows to safeguard Dax’s memories and “pass them on.” This transfer grants T’Pol access to the memories of all seven hosts of Dax, including Curzon—yet notably omitting Jadzia and Ezri (Nicole de Boer). The ramifications of this unprecedented transfer remain a mystery, especially concerning its impact on T’Pol’s psyche.
What Lies Ahead for T’Pol and Her New Role as Dax?
Will We Witness Further Developments in Her Journey?

The conclusion of Star Trek: Lower Decks raises intriguing questions about T’Pol’s future role as the custodian of Dax’s memories. It is suggested that she may journey to Curzon’s universe to restore the memories to the Trill people. However, this introduces complications concerning the absence of the Dax symbiont. One potential scenario is that Dax’s memories could be transferred into a new symbiont, creating a new host for the legacy. Alternatively, T’Pol could find herself burdened with the memories of seven Dax hosts, which could present significant psychological challenges for a Vulcan.
As Star Trek: Lower Decks wraps up its fifth season, the fate of T’Pol and the consequences of her monumental choice remain largely unanswered. While the series finale opened up several fascinating storylines for the future, there have been no updates regarding potential spin-offs or continuations of this narrative arc. Regardless, “Fissure Quest”stands out as an engaging episode that provided a delightful exploration of alternate iterations of beloved characters, culminating in a fitting and high-spirited conclusion for Star Trek: Lower Decks.