Digital Overlord (formerly)
Borg Tower is located near the center of New Ninjago City, where the final battle took place. The tower is currently the tallest building in the city, standing at over 100 floors high.
When infected by the Digital Overlord, Borg Tower's light glows red.
Though not physically present, the Borg Tower was seen by both Krux and Master Wu as a vision of it was seen inside of the time vortex before it closed, where it would ultimately tell the exact time of when Acronix would return to Ninjago; forty years into the future.
After the events of "Rise of the Spinjitzu Master," Cyrus Borg began constructing Borg Tower where the Overlord was defeated. It was finished sometime before the events of "The Surge", and is now a main location of New Ninjago City.
Borg Tower was set as the destination of a field trip set up by Master Wu, his four Ninja heroes, and Nya for the children at Master Wu's Academy that day, and they took a non-futuristic school bus (due to Wu's preferring non-futuristic transportation) to the Tower and entered for a tour. There, they met Cyrus Borg and P.I.X.A.L., who led the students, Wu, and Nya on the rest of the tour while Cyrus took the Ninja to his office. After giving them a statue of him containing the Techno Blades and new ninja suits, the Ninja took to the elevator. Soon after, a mysterious virus infected Borg Tower, infecting all the machinery including P.I.X.A.L. in an effort to stop the Ninja from escaping. P.I.X.A.L. informed them that their tour "ends here," with her and the machinery trying to kill Nya, Wu and the children. All of them made it past the machines, taking out some of them in the process, and eventually everything including P.I.X.A.L was disinfected. The virus remained in Borg Tower's digital system, corrupting Cyrus Borg (mainly his "spider-legs") and taking over the whole Tower (and New Ninjago City). He reinfected P.I.X.A.L., and Borg Tower remained infected for the rest of the episode.
Back at Borg Tower, the virus still lurks in its digital system using an infected P.I.X.A.L. to get it free. However, now that he can control Cyrus Borg's spider-legs, the virus has other plans.
Once Zane has shut down New Ninjago City's power source, Borg Tower is shut down along with the rest of the city.
In and under Borg Tower is a series of events that leads to trying to retrieve the virus and the retrieving of Cyrus Borg somewhere inside the tower's assembly lines. Sensei Wu is then turned into Techno Wu in the tower.
The Tower only makes small cameos here and there in the scenes in New Ninjago City.
Borg Tower became a battle ground once again when a group of Nindroids lead by Pythor attempted to storm the tower to retrieve the Techno Blades. Aside from this, Cyrus Borg and P.I.X.A.L. were looking for a way for the Ninja to use the techno blades and reboot the system remotely.
At Borg Tower, Sensei Wu and Garmadon were searching all of the Tower's files for Project: Arcturus, only to find nothing about it whatsoever. As a result, all they did was remember the battle with a serpentine of the same name from a long time ago.
During the Ninjas' mission to stop the Nindroids from getting the Golden Weapons, the tower was used as the base of operations until the Nindroids took control forcing the team to abandon the base and get to Garmadon's Monastery.
The mission for the nindroids was completed for them and The Overlord transformed into the Golden Master. The nindroids used Borg Tower's Factory to create the mech for the Overlord. After the mech was completed and the events of the nindroid assault, Borg Tower was reclaimed to Cyrus Borg.
Lloyd runs a simulation to try and obtain a replica of the Golden Armor within Borg's office.
- Borg Tower appears in the background of the "Ninjago City" level of LEGO Ninjago: Shadow of Ronin.