Explanations below (I spent sooooo long on them holy hell)
Just thought this was a fun thing to put together, I’m definitely missing a few things but I got as much in as I can, and I tried to explain most of these as best as possible.
Above iceberg/sky:
Kai is the green ninja: Rumors in the season 1 era, it was very built up.
S1-2 voice errors: Many ninja talk with the wrong voices in season 1 and 2.
Zane in the fridge vs. a note: In Season 1 Episode 2, Home, Zane is shown sitting in the fridge in the UK version. In the U.S version, there is just a note.
S1Ep1 video game: On the television release in the U.S for the first ever episode, the ninja are seen playing a custom made video game which is foreshadowing them in the fight for the golden scythe. In the Netflix version, they are playing the Ninjago DS game.
Wu is Lloyd's dad: Wu and Lloyd both have blonde hair, and Wu used to have a thing for Misako.
Jay using wind powers: In the episode The Green Ninja, Jay uses wind powers in the volcano to blow away fire.
Seliel: An original character in the Ninjago Comics, Phantom Ninja
Animejago: Anime style Ninjago in Season 11 “The Absolute Worst”
Zane = Ice Emperor: Before the reveal many people theorized that Zane would be the Ice Emperor.
Iceberg:
Echo Zane is Mr. E: A scrapped idea by the writers which shows Harumi finding the old lighthouse and rebuilding Echo Zane into Mr. E. Still plausible.
Cole had depression as a ghost: In a canon Ninjago book, The Book of Spinjitzu, it’s confirmed that Cole went through a depressive episode during his time a ghost because of his failure to contribute to the team in the same way he used to.
Sorla is Garmadon and Wu's mother: Sorla has lots of knowlegde about elemental masters, but it’s unknown where she got this information as she lives in the Never-Realm. Also this
Jay has ADHD/Anxiety: He talks quickly, has bad reactions to loud sounds, understands social cues, scared in tense situations, and many other things (this is very plausible)
Lar the water ninja: A self proclaimed “water ninja” named Lar
Merjitzu: An odd rumor back then about mermaid spinjitzu...?
Zane's visions: Zane has many visions throughout the show, and they all seem to come true/seem accurate
Cole's mother: Many theories spawned around the identity of Cole’s mother before season 13, mainly because she was rarely mentioned and never seen until then.
Below iceberg:
Zane and Nya are murderers: they have the highest kill count in the show by far
The SoG massacred tons of people: Self explanatory, while the SoG were taking over Ninjago and running the streets in Season 9, of course they harrassed people.
Cole is colorblind: Cole frequently refers to things as the wrong color in the show, leading to this theory/headcanon
EM age slower than regular people: A prime example of this is Ray and Maya. They don’t appear old at all even after many years. The same can be said about Wu’s whole family.
Ninjago manga: More information on it here, but it’s basically a gag manga series with only 8 pages.
Original S7 ending: The original ending was written to be a finale of Ninjago. It would end with Acronix and Krux locked up in Kryptarium Prison 2.0, forty years in the future, while Lloyd and Kai reminisced about the adventures they had in the past decades and no sign of Cole. [SCRIPT]
Ronin has a wife and kids: Tommy Andreasen stated that in his head, he imagines Ronin has three children and a demanding wife. [tweet]
Nelson and the mailman are related: ???? I don’t even know...
Deeper iceberg:
Zane is a transmale: Stemming from this wiki page because of their visual similarities.
Vex killing prisoners: There are many prison cells in the Ice Emperors palace, but all are empty, leading many to believe they’ve been killed/frozen.
Cole is an oni: Cole survived the fall into the darkness that only oni can survive, like Garmadon and Lloyd. There is no explanation for this, and with little origin story to Cole’s family, one can only assume.
Mistaké is still alive: Many believe Mistaké is still alive, as she’s seen here in season 10.
Harumi playing with a green ninja doll during Great Devourer attack: This doesn't make any sense since Lloyd was not known to be the green ninja around this time, and some could say his first debut as a ninja was in the Great Devourer attack. Harumi seemed to be obsessed with the green ninja around this time, however.
Cole and Jay are related: A probably-debunked theory since not much is known about either of their families. Jay is adopted and Cole only has his father. Some believe their families are connected, as half brothers or even cousins..
the mailman is an Oni: I’m.. not sure about this one either..
Skylor’s original design: [Shown here]
Bottom of iceberg:
Nadakhan is shapeshifting as Clutch Powers/Nadakhan killed Clutch inside the lamp:
Cole is gay coded: The Royal Blacksmiths. Enough said.
The Formlings are a murdering cult: In their animal forms, do they kill animals and or other people?
The ultradragon was hunted and killed: The remains of their bones were used for Iron Barons throne, shown here.
How did Lloyd take his father’s robe from him?: Garmadon was chained up, but Lloyd later returns to the realm of Ninjago wearing his father’s robes.
Fetish art: Many pieces of fetish art have been created for this show, including inflation, feet, vore, tickling, macro, blueberry inflation, and more
Deep waters:
Omega is Clutch's dad: N/A
Jay kills Cliff Gordon in S6: When Jay wishes to Nadakhan for wealth and fortune, and quickly a letter conveniently comes to him about the passing of his father Cliff Gordon, and how he now owns all of his property.
Onceler Morro: tumblr meme
Skylor is genetically engineered: With no mention of her mother, it’s all up to the imagination.
Garmadon x Lloyd: The absolute worst side of the fandom, and yes it does exist/has existed.
incest/r//pe fics: The most disgusting things ever created.
