In the Season 15 finale of Doctor Who, titled “The Reality War,” the major rewrite is that Omega is now named the first Time Lord, placing his actions at the center of Gallifrey’s origins alongside the Timeless Child. This change shifts how fans view the Doctor’s regenerative power and the history of the Time Lords.
Previously, viewers understood that a mysterious figure called the Timeless Child was the sole source of regeneration for Gallifreyans.
Now, the finale suggests that Omega’s heroic work with the Hand of Omega was equally vital. This neutral presentation adds new depth without dismissing earlier storylines.

Omega’s return and its impact on lore
In the Season 15 finale, “The Reality War,” Omega returns to the story in a way that changes what viewers thought they knew. Omega was an engineer who used a device called the Hand of Omega to give Gallifrey the energy needed for time travel.
He sacrificed himself in an antimatter universe to power Gallifrey’s first time-traveling ship. The Rani, another scientist, creates a fractured reality on Earth to bring Omega back from exile. This plan suggests that Omega’s actions were just as important as the Timeless Child in giving Gallifrey its power.

A broader context for Gallifrey’s history
Rather than replacing the Timeless Child story in Doctor Who, the finale adds Omega’s story as a second origin for Gallifrey’s regenerative power. For many years, viewers believed Omega’s sacrifice was the sole reason Gallifreyans could regenerate.
Then came the Timeless Child revelation, which shifted the source to a child found by Tecteun. Now both stories are part of the same history: Omega’s experiment and Tecteun’s research work together to explain how regeneration spread. This broader view shows that Gallifrey’s history includes multiple events driving its rise as a time-traveling society.

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Doctor Who’s focus on choice amid new revelations
When faced with these changing origin stories, Doctor Who remains focused on actions rather than heritage. In “The Reality War,” the Doctor finds a child named Poppy in a fractured reality created by the Rani. Omega’s return threatens to consume energy and destroy everything unless he is stopped.
Doctor Who chooses to protect Poppy and prevent Omega’s reemergence, showing that saving lives matters more than uncovering family secrets. This decision underlines that the Doctor’s identity is defined by compassion and responsibility, not just by how they came to be.

The rewrite’s effect on future storytelling of Doctor Who
By combining Omega and the Timeless Child, “The Reality War” encourages viewers to see Gallifrey’s past as a web of events rather than a single tale. Old episodes about Omega’s sacrifice now connect directly to newer revelations about the Timeless Child.
Fans can look back at earlier stories and notice how both Omega’s heroism and Tecteun’s experiments shaped Gallifrey. As future seasons continue, the show may explore how these two origins influence Gallifrey’s culture and the Doctor’s own self-understanding. This approach keeps old stories intact while allowing room for new ideas about Gallifrey’s complex history.

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