The "Jay is Lloyd older brother Au" that I created, it's got three different versions but I gonna with the original one:
So, Jay is Lloyd's older brother, they have a difference of more or less 5 and a half years old and they are both adopted by Ed and Edna (Jay is the only one of the two who knows that the Walkers are not their biological parents).
Unlike Canon, Jay is not one of the ninjas (he still receives training but he never reached his True Pontential and no one but Master Wu knows that he "is" a ninja). He's been there at Spinjutzo Monastery since the beginning but not as a frontline hero, he "works" there for Master Wu as a kind of assistant and resident mechanical engineer (this is just a facade. Wu want to keep an eye on his nephew the Master of Lightning and Jay wants to practice his powers so he doesn't run the risk of hurting anyone or being discover) Nya has been in "his" place, being the fourth ninja on the team since she was rescued from Garmadon (she ends up unlocking her true potential much earlier in the story).
No one but Master Wu know's where's the Lightning Elemental is, Wu says that they have been "missing" since the previous Lightning Elemental, Libber, passed her powers.
And Lloyd is there, but not as the little boy from Darkleys who wants to follow in the footsteps of his dad a villain, but as a boy who wants to make his parents and older brother proud. So one day, as Jay is leaving his monthly visit to his parents, Lloyd follows Jay to the Monastery, intending to receive the same fighting lessons as the ninjas. And everyone's like "Who the hell is this kid? He broke into the Monastery and wants to play ninja." And Kai, being Kai, does the same thing as Canon: leaves Lloyd on the roof of someone's house, unaware that Lloyd is Jay's younger brother. As a result, Lloyd is angry as hell with the ninjas, and somehow does the same stupid thing as in canon, freeing the Serpentines.
Lloyd almost immediately realizes what a screw-up he's done and sets out to find Jay, but is captured and held hostage. Meanwhile, at the Monastery, Jay discovers that Lloyd was there but Kai left him on the roof of some house (??) and becomes furious with the fire ninja, to the point of yelling at him. Master Wu hears the commotion and learns that his nephew Jay's little brother was there and that he wanted to train to be a ninja, and being the "wise Master" that he is, Wu tells them to go after Lloyd and bring him to the Monastery he doesn't miss the angry look Jay gave him during this part.
And then they come across the whole Serpentine situation, with Lloyd as a hostage, they try to fight but fail due to being unprepared for battle. The Cobras end up escaping with Lloyd in tow, screaming desperately because he wants his older brother and Jay panics because he wants to help his little brother but he can't do something without ending up revealing his powers Jay has extremely high morals here, he had made a promise that he would never use his powers, much less be a ninja, due to his... Family situation.
They end up losing the fight and losing Lloyd.
Jay is completely devastated.
And then the whole shit starts.
Please says it looks so cool like I want to look.
(maybe I'll do other posts about the other two versions of this, but... It's just a "maybe")
I also have other where he and the other ninjas switch places and one more where he becomes one with Lightning after the fusion.
If anyone is interested just comment.
Something, something, part II about Ninja Team headcanons! Part I here
• He knows things he shouldn't know. Spending a good part of your life at Darkleys does that to you. That was a school for future gang leaders, psychopaths and other types of crazy people. You can't tell me that at no point in his life did he learn how to dismember someone by the right way.
• He memorized all the names of all Starfare volumes and sagas. He's a complete nerd about these comics. And it's worse when he and Jay are together.
• Sometimes, he goes out with Nya, Pixal and Skylor just to gossip. These four together talk about everything and everyone that exists in the world.
• Even during the few times of peace in Ninjago, he suffers from insomnia. Often because of nightmares and some night terrors, but also because of his genetics. Both the Oni side and the Dragon side are more nocturnal. So he often stayed up all night just because he wasn't really tired and managed to stay that way until dawn.
• Sometimes he finds himself thinking about Akita. Missing her. Those few days with the wolf girl had affected him. As much as Lloyd tries to deny it, it was better than with Harumi, in more ways than one.
• He loves sweets, but not just any kind of sweets. He likes those that are sweet and at the same time refreshing. Because this way he doesn't get sick and can eat more.
• After the battle against the Oni, he often thinks about the "dream" he had about his Grandfather. He told Master Wu once, but he just smiled and said it was a dream.
• He is extremely protective of his family. Brothers, sisters, uncle, children... You will never lay a finger on any of them and leave in Punishment if the DragOni is around.
• Being the Green Ninja and the guy who is on the front line in both defense and attack, he is very precise with his powers and strikes. One stumble and things could turn out to be fatal.
• At some point, he developed Wu's tea addiction and Garmadon's plant worship. This runs in the family and is completely inevitable.
• Her eyes were brown, exactly the color of wood, like her father's. But after spending a year as part of the ocean, Nya's eyes changed, now having prominent blue-gray spots on the irises. At some point they returned more to brown, but whenever she uses her powers on a large scale, her eyes return to the blue.
• She's better than Kai at making weapons. Swords, axes, clubs, arrows... She always had a lot of free time in her childhood and early teens, and while Kai was busy being a ninja, she had all the time in the world to practice making weapons.
• After she was brought back from the endless sea, for a long time she had these bouts of overpowering. Most of the time this manifested itself in her physical form, with the ends of her hair randomly turning blue and floating as if she were underwater. She also remained with the marks of the transformation, but this has faded over time, almost like a really old scar, you won't notice it unless you're paying close attention.
• She is equally impulsive and the voice of reason. She will think at least 20 times to make sure the punch she will hit you and break your nose.
• Don't be fooled, even though she is usually very calm and is part of the voice of reason trio Zane and Pixal are the other members, Nya can be extremely jealous. She is related to Kai and was raised by him, so she ended up getting this overprotective and jealous instinct. Jay and Lloyd are the main targets of this instinct, because they are her Yin and her little brother. Although she often tries to hide it or not care, she will always end up being somewhat possessive of her loved ones.
• She can still hear the voice of the ocean, more specifically, Nyad. But this time they're not calling out to her, they're congratulating her on finding what she lost.
• She is a master of Aikido, I just think it's matches with her, being the Water Ninja, she long ago learned to go with the flow of the fight. Water never takes you where you want to go, you are the one carried by the force of its flow. Some time later, she trained Lloyd in this style.
• The amount of times she called Kai "dad" as a child is insane. She used to call him that in the most mundane tasks that used to remind her of Ray. Kai held back crying every time that she called him that.
• She was never a heavy sleeper, always having difficulty for fall sleeping and often waking up in the middle of the night. This only got better after she started living at the Monastery, as she felt that so much Kai and she were safer.
• She has a collection of weapons. Swords and spears are what she collects most, she keeps most of them hidden in Samurai X's cave, but there are also some in her room, for emergency purposes and also because she thinks it makes the decor look cool.
• I got this from some post, but I don't remember who the author was He talks in his sleep. At some point in his life some parts of the voice control were damaged and even after Nya and Jay took a look he continued talking in his sleep. He just can't stop. The worst is on nights when he has nightmares, as he begins not only to scream, but to narrate the dream, right down to the noises in the scene.
• Every time he gets very nervous he starts to freeze himself or the people and things around him. He tends to distance himself when this happens, as he prefers to freeze his own circuits than the people he loves.
• Sometimes he refuses to sleep, not for any worrying reason, but because he wants to do some tasks that he couldn't do while it was daylight. Washing the dishes, sweeping the training yard, putting the clothes to wash... Any household chore that he didn't do due to some unforeseen circumstances, he does at night.
• Whenever he hears an unfamiliar term or slang, he tends to do a quick search. If he doesn't find the meaning, he will ask Jay or Kai later, since they are the two who most spend time online.
• The Ice Emperor episode left him with a lot of trauma as well as some survivor's guilt. Zane never stopped to think that he could actually kill frozen people or commit genocide if his 1s and 0s weren't actually aligned correctly. He never forgave himself and started using his powers less.
• Birds are his favorite animals, of course. But there's one thing no one knows: He can't decide between the hawk or the snowy owl as his favorite kind of bird.
• He has a mental list of all the food preferences of all his ninjas and other friends.
• In the hottest summers, the ninjas fight to spend time with Zane, as he is a walking air conditioner. He finds this particularly funny and always laughs when they start arguing with each other.
• He and Pixal often play board games and experiment human things.
• Before discovering he was a Nindroid, Zane often did non-human things that others found strange. One time, when it was just him, Cole and Jay, they went out on a little scouting mission, and in the middle of the whole thing they ran into some highwaymen who they ended up fighting, and in the middle of the fight, Zane hit his head on a rock, and while Jay and Cole were in complete panic Zane was confused because he didn't feel hurt. The next few days were filled with worry and jokes about Zane being a blockhead.
Something, something, some headcanons about the Ninja team that I have this is in alphabetical order. Part II here!
Cole
• Being the Earth Elemental, he knows several types of rocks, earth and minerals, as each one has a different structure that can interfere and/or contribute to a task/fight.
• Even though he hated dancing for a long time, he still practiced some steps from different dance styles, because some of them were very similar to moves that could be used in battle he did it in secret thought.
• For a long time he always acted a little distant from the other team members, but he was still there to support them if they needed it.
• He's a mama's boy, and he loved seeing Lilly and Lou dancing together.
• It was his grandfather who chose his name. He was bedridden, but he held on until Lilly gave birth to the baby, and when Grandfather saw the little one he cried, because he knew he wouldn't survive to see the child growing up, So, Lilly asked him to name him, as if it were an "I'll always be here" gesture from grandfather to grandson.
• His favorite game is the one where there's a bunch of food falling from the sky and you have to catch it, he's already broken a record 3 times in this game.
Jay
• He's the fastest and most elastic/flexible on the team. This guy's ability to put his thigh behind his head is insane, you DON'T want to be his partner in stretching exercises.
• He knows the Kyusho-Jitsu. This is a technique/type of fight used to stun/paralyze the opponent by striking pressure points (Curiosity, this is the technique that inspired Ty Lee's Chi Blocking technique from ATLA). He uses this on normal criminals, like thieves, assassins, and smuggling gangs, that way they don't get hurt. However, he also use it on Krypytarium criminals, but with the addition of a mild shock to ensure the criminal is rendered unconscious.
• Edna taught him how to cook, so he has the ability to make really good food. Although he prefers to make roasts and stews.
• Jay is a sleepwalker. Not daily, but during really bad lightning storms. Master Wu often found him sleeping on the highest point of the Monastery after the storm. Once, the Ninjas tried to keep him inside the room during the storm. They locked the door and windows and kept watch. But somehow, Jay still managed to get out of the room and get into the storm. No one ever found out how he did this.
• This one I got from Lloyd’s Guide To Surviving The Merge, a lovely fanfiction of @omgjayaaa, I really loved that one He's a medic. He knows how to treat illnesses, injuries, concussions, etc. It started out more as a hobby. Check out medical books from the local library and spend hours reading and applying the teachings on the Monastery's training dummies (sometimes Zane was the victim) just as a "strange diversion" (Kai's words). However, one day, there was a training accident and Cole dislocated his arm, while everyone was worried trying to call the hospital, in an incredible act not to mention strange of calm, Jay grabbed Cole's arm and relocated it back into place, then he borrowed some materials that were in his room and made a sling for the Earth Elemental's arm. No one ever forgot that day, because while Jay was "Just another normal day" the others were staring at him like "What the fuck was that?"
• I also got this from a Ninjago chat fanfic, also from @omgjayaaa He is a natural with children. You can't say otherwise, that this super sensitive and humorous man doesn't have a natural ability to calm/entertain/do anything involving children. And he really enjoys that, being able to make a baby stop crying and go to sleep or helping a child that got lost from the parents. Your honor, this man has everything it takes to be a good father and you're not going to change my mind.
Kai
• He hates super spicy food, being the Fire Elemental doesn't mean his taste buds are pepper/wasabi approved. He just likes a small amount in his food. Ironically, spicy food can kind of serve as fuel for the fire, so the hotter the pepper is, the more heat the fire emanates from it. Although he hates this ability.
• He's not very good at reading/writing, he left school very early to take care of Nya and the Blacksmith, so he lost most of his literacy skills. However, he took some lessons from Wu, so he didn't feel so out of place.
• In fact, his natural hair is like his mother's, but it's as untamable as his father's, which is why he uses so much hair gel. Like, you can't say that wavy and stubborn hair is not hard to care.
• He's that kind of person who sings in the shower, he often forgets that there are people in the Monastery and starts singing so loud that you can hear it from the training yard.
• He and Jay, often in secret, hang out together. Where? Karaoke. Kai sings and Jay plays the guitar, sometimes they change roles Kai prefers to play the bass. It's a lot of fun for both of them, but they don't want to let others find out, because they know none of them, especially Nya, would let it go.
• As much as many people think otherwise, of the RGB siblings, Kai is the most "stable". Not because he wants to, but because he is Nya and Lloyd's support. He feels very embarrassed when the papers change.
• He is super attentive to people close to him, especially Lloyd, who is the youngest on the team. However, now with the addition of Wyldfyre, Sora and Arin in DR, he is as protective as he was with Lloyd.
I'll show to you the first song of "A Childhood In The Past: A Ninjago Musical", proudly fanmade and written by me, Cookis167.
You can find the book on Wattpad and Archive of Our Own under the above username.
all the time i think about how Nya really and truly was the glue of the ninja like Jay said in Crystallized because let’s be so for real, had Nya not been kidnapped by the Skeleton Army or been such a great help to the Ninja and Wu ever since, there literally would be no Ninja. She’s what assembled the four core ninja to begin with. She goes to every length possible for these boys, whether they like it or not. She keeps it going. She’s Nya and she’s badass and she’s the game-changer in so much of the Ninjago plot that these boys truly do not know what to do without her.
please pretty please can we take a moment to acknowledge the fact that, for a brief moment in time, Dareth was quite literally the elemental master of shit 
and also when nya smith said “save me, jay walker. there’s gonna be a wedding and i want you to do something about it.”
remember when kai smith became the first enemies-to-lovers booktok boyfriend by saying “was it his idea to make me fall for you or yours? because it worked.”
IS NOBODY GONNA TALK ABOUT THE FACT THAT COLE HAS A BOYFRIEND NOW???
I HAVE BEEN WATCHING THE LAND OF LOST THINGS EPISODE GOING “THEY’RE LITERALLY BOYFRIENDS” THE ENTIRE TIME
for context, since i can’t draw for shit, the faceclaims for raene and gia sparks respectively are emily and sophie jones from lego elves. this should explain all you need to know thus far.
here's me pretending euphrasia doesn't exist so that way the little gia sparks can be the chaotic good elemental master of wind we all need.
here's me pretending euphrasia doesn't exist so that way the little gia sparks can be the chaotic good elemental master of wind we all need.