Time travel (also known as temporal voyage[1]) is the concept of movement between certain points in time, such as the past or the future, analogous to movement between different points in space by an object or a person, typically using a hypothetical device known as a time machine.
The Time Twins traveled 40 years into the past, moments after their defeat, to change the outcome of the Battle for All Time, with Kai, Nya, and Wu to secretly get into the Iron Doom. Finally, Wu sacrificed himself, and he along with the Time Twins were lost in time, while Kai and Nya returned to the present.
In the Iron Doom, reversal energy transported Wu and the Time Twins across various time periods as they fought and Wu de-aged, with the twins attempting to change the past and Wu stopping them each time.
Kai is the ninja to travel to the past the most times.
In two of the instances of time travel, the two time periods involved seem to exist in some sort of simultaneity.
In "Wrong Place, Wrong Time," Wu watches the effects of Garmadon and the ninja's actions in the past unfold in the present, seeing a photo of Lloyd fade away and seeing gray clouds roll over Ninjago.
In "Lost in Time," the ninja and their allies in the present are aware that Ninjago City's technological state had regressed forty years as a result of the Time Twins interfering with the past at the Battle for All Time.
This is similar to some of the effects of the alternate timeline remaining after it was seemingly reversed.
According to Tommy Andreasen, Griffin Turner's Speed is not as fast as that of the Flash from DC Comics.[4] As such, he most likely cannot travel through time.[5]
When time-traveling through the vortex, one can observe past events. Events from Skybound, which had since been undone, are even visible from the vortex.
P.I.X.A.L. was temporarily erased from existence in "Lost in Time". Though not acknowledged by any of the characters, she was nowhere to be seen when the Time Twins' meddling in the past caused technology to regress forty years, as she had not been built until recently.
Though alternate universes are often associated with time travel in science fiction, there are no alternate universes in Ninjago.[8]
However, Tommy Andreasen stated this is not the case,[10] and the show contradicts it as well, as the original designs are seen in photos and flashbacks in Sons of Garmadon and onward, which would not be the case if they had been historically altered due to time travel.
issue 31 of the Ninjago Magazine showed that while Kai and Nya were in the Time Vortex, Maya got her power of Water back and used it against the Vermillion. Presumably, this is not how it should work, as Season 11 revealed that there could be two elemental masters of the same element thanks to Time travel,[2] which means that when Nya went to the Time Vortex, she shouldn't have lost her power to her mother.
