Vadic answered to a mysterious Face in Star Trek: Picard season 3, but despite some fan confusion, The Face was always the Borg Queen.

Summary

• The Borg Queen, assisted by Captain Vadic and the Changelings, plot to destroy the Federation, but their plan is foiled by Picard and the crew of the USS Enterprise-D.
• Vadic, who was initially thought to be a Changeling, is revealed to be working under the orders of the Borg Queen, who uses her to capture Jack Crusher and assimilate Starfleet officers.
• By using Borg DNA implanted in Jack, the Borg Queen seeks to assimilate young Starfleet officers, but Picard is able to break Jack's connection to the Borg Queen and ultimately destroy her ship.

Star Trek: Picard season 3's villain, Captain Vadic (Amanda Plummer), answered to a mysterious being billed as The Face (Garth Kemp), but despite some fan confusion, The Face was always the Borg Queen (Alice Krige). Two of Star Trek's greatest villains, the Changelings and the Borg, team up to take on the United Federation of Planets in Picard season 3. However, the role of the Borg was a closely guarded secret until the final two episodes. Picard season 3, episode 4, "No Win Scenario," revealed Vadic was the minion of another villain who was originally believed to be another Changeling.

The Face ordered Vadic to capture Jack Crusher, the son of Dr. Beverly Crusher (Gates McFadden) and Jean-Luc Picard (Patrick Stewart), by attacking the USS Titan and demanding Admiral Picard hand him over. Picard, of course, refused to give up his son, but he and the Titan's crew could see Vadic's clear desperation. Unknown to them (and the audience) at the time, not only was Vadic a Changeling herself, but she was also receiving orders from the Borg Queen. The Borg and Changeling's plot to destroy the Federation very nearly succeeded, but was cut off just in time thanks to Picard and the reunited crew of the USS Enterprise-D.

Vadic’s Boss In Star Trek: Picard Season 3 Was Always The Borg Queen

In Star Trek: Picard season 3, episode 4, "No Win Scenario," Vadic cuts off her hand, revealing herself to be a Changeling, and the goo shapes itself into a distorted Face. The Face reminds Vadic that she and her ship are expendable, and she must capture Jack Crusher at all costs. While the identity of Vadic's boss was not immediately revealed, the face that appeared on her ship always belonged to the Borg Queen. This was confirmed by showrunner Terry Matalas and others and the commentary and special features of Star Trek: Picard season 3's Blu-ray release. The Borg were severely crippled in the finale of Star Trek: Voyager, which left the Borg Queen weak and disfigured. This not only explains why she needs help from the Changelings, but also why she looks the way she does.

Despite the vagueness of Vadic's first communications with her boss, she and the Changelings were always working with the Borg and receiving orders from the Borg Queen. Vadic had her own reasons for wanting to take down the Federation, but the alliance with the Borg Queen gave her the power and technology necessary to achieve her goals. As both the Borg Queen and the Changelings felt they had been wronged by the Federation, they decided to band together to get their revenge. After their previous conflicts with Starfleet, the Borg and the Changelings were too weak on their own to stand against the might of the Federation. But together, their plan was nearly successful.

The Borg Queen’s Picard Season 3 Alliance With Vadic & Changelings Explained

The Borg Queen's plan required the corpse of Jean-Luc Picard Jack Crusher, and Vadic's Changelings helped her set everything in motion. After his time as Locutus, Picard still had Borg DNA in his brain and he unknowingly passed this DNA onto his son, Jack. The Changelings stole Picard's body from Daystrom Station and used the Borg DNA to alter the transporters on Starfleet ships. This allowed the Borg Queen to assimilate every Starfleet officer under the age of 25. The Borg Queen also reached out to Jack Crusher using the Borg DNA in his brain and he became Vox, the transponder for the signal that led to the assimilation of the Starfleet ships at the Frontier Day celebration.

Although Jack found a certain comfort in being a part of the Borg Collective, Picard was able to reach out to his son and break his connection with the Borg Queen. The reunited TNG crew then used the unassimilated USS Enterprise-D to destroy the Borg Queen and her ship, saving the galaxy yet again. Star Trek: Picard season 3 was a nostalgic triumph for many reasons, and it finally brought an end to the original Borg Collective that has plagued the Federation and Jean-Luc Picard for over 30 years.