Things We Don't Tell Humans, by Sinead Rivka is an ongoing TransformersFan Fic that follows the Autobots of the 2007 movie series as they learn to trust their new human allies with more and and more of their culture. As they make friendships and form alliances, it becomes plain that both the humans and the Autobots are more alike than they ever could have dreamed, and that the future of the Cybertronian race is far from over. It is organized into Story Arcs. Some spoilers.Author's Summary: This was a first for us Autobots; never before have we come in contact with a species like these humans, so eerily similar to our own race and twice as tenacious as Sparklings. The question was, how far can we trust the humans with our culture? Gradual AU
Aliens Speaking English: Justified, the Cybertronians learned it through the internet and interaction with humans, and share the information amongst themselves. The Cybertronian children don’t have the capacity to learn human languages at first, though a few patient humans can get through to them using symbols, tone of voice, and body language.
Ancient Tomb: The Tomb of the Primes is important during the Revenge of the Fallen arc, and becomes important again when Faust realizes the Primes in the Tomb would have had their own Matrixes with them, not just the one they sealed themselves away to guard.
Angst Coma: Prowl goes into these if he experiences an emotional extreme and/or an event his battle computer can’t rationalize. They can get very serious, especially when they involve the life or death of those close to him.
Authority Equals Asskicking: In full force! Especially when Bumblebee decides to remind Jolt exactly why he’s an officer, despite his young age.
Awesome Moment of Crowning: Chapter 21: The ascension and renaming of Orion Pax, Ariel, and Megivor to Prime, Prime’s Consort, and Lord Protector. Prowl has a badass speech, and even Sentinel Prime’s revelation that he’s become a Nay-Theist and can’t continue the ceremony only sets the stage for more awesome.
Chapter 64, when Faust is named as Sam's Lord Protector, and Elita-One, Bumblebee, Ratchet, Jazz, Hot Rod, and Will all become Primes. Chromia, Barricade, the Twins, Prowl, Ultra Magnus, and Ironhide are their Lady and Lord Protectors, respectively.
Baby Language: The Cybertronian children have a pretty complex one that only those with Caretaker programming can understand.
Badass Bureaucrat: Ratchet is a senator. Also a medic, a war hero, a father several times over and doesn’t take nonsense from anyone.
Badass Family: The Autobots are practically made of this. Literally, in some cases.
Badass Grandpa: Terratron, Jetfire/Skyfire, possibly Kup (although we haven’t seen him fight). Ratchet counts too, as he’s older than many of the adult characters and in human terms he’s Barricade’s, Iris’, and Hudson’s grandfather.
Battle Couple: Optimus Prime and Elita-One, Ironhide and Chromia, Prowl and Jazz.
Bedmate Reveal: A variation. Wheeljack wakes up wondering why Prowl is in his apartment and giving him an amused look. It takes a moment for it to sink in: he's in Ratchet and Prowl's apartment, he was supposed to have left before Prowl returned, and he was sleeping on the couch with Ratchet in a pretty compromising position.
Hurting or threatening children of any species pisses off all of the Autobots and the fathers in NEST. And Megatron too.
Sentinel Prime is a walking Berserk Button for Prowl. He irritates everybody else too, but Prowl truly hates him.
Another one for Prowl: people nosing about in his personal life. Too bad everyone loves doing it.
Don't interrupt Elita-One if she's trying to get some time alone with her husband. Just don't.
Better as Friends: Justified temporarily between Bumblebee and Barricade, as the latter is a spy in the Decepticon ranks and the former an advance scout for the Autobots. They eventually decide to throw caution to the winds.
Blood Brothers: Pre-war Megatron and Optimus Prime; Terratron and Sentinel Prime.
Came Back Wrong: Detrious. His son, Prowl, has to deal with the consequences. Optimus worries about this when he tries to resurrect Jazz. Given Prowl’s history, it’s not surprising that Prowl panics.
Canon Welding: Spinox, one of Terratron's more spiritual students, eventually changes his name to Rhinox and is part of a crashed team in Africa with experimental nanite camouflage technology. (which Ratchet is really jealous that he didn't get to test). Oh, and he's one of Wheeljack's grown-up sparklings. Likewise,from the same continuity,Dinobot is Ironhide and Chromia's wayward youngest child, and "Optimus" Primal is Ultra Magnus/Dion's, and earned his nickname from his habit of acting uncannily like his uncle Optimus Prime.
Futureshadowing: After Prowl is informed of both sparklings on Earth and Jazz's death he thinks he might adopt a sparkling and rely on that to give himself a reason to live. It becomes a Tear Jerker when one realizes this is essentially what his first caretaker was doing before he committed suicide.
Gender Is No Object: For the Cybertronians, despite the fact that "Femmes" are relatively rare.
Gender Rarity Value: Femmes are valued as they are the least common of the three genders in a dying race, but they avoid being enslaved or worshiped because they are not strictly necessary to reproduce and because of the above trope.
Good Costume Switch: Barricade is more streamlined and graceful around his Autobot family, and paints himself black so that he isn’t confused with his Caretaker, Prowl. After he gleefully scares the pants off Sam, of course.
Good Parents: Many –it’s easier to list the bad parents, but there are a few surprises in the Good Parents category: Barricade, Sideswipe, Sunstreaker, and Sam
Good People Have Good Sex: The good guys generally have healthy sexual relationships. When that starts to go downhill for Megatron and Nightbird, she knows something is wrong.
Happily Adopted: Prowl, Sideswipe and Sunstreaker, later Faust, Æether, Alchemy, Hudson, Cobalt, Iris, Torch, Quicksilver, Sepia, Viridian, and Wheelie
Hard Head: Played for Laughs when Ratchet conks Optimus over the head with his own damaged armor after a fight. Horrifyingly subverted and Played for Drama with the head injury Megatron received in the second film.
Headbutt of Love: How you properly say hello to a Cybertronian child. It seems to be the equivalent of a hug.
Incompletely Trained: Megatron, and it comes back to bite him in the butt more than once. Bumblebee too…but that doesn’t stop him from wiping the floor with Jolt, unarmed, using the fighting style he is half-trained in.
Long Lived: The Cybertronians. And now Dana, Tom Banachek, and Sam. More recently, Mikayla.
Love at First Sight: Legitimate and physically possible for Cybertronians. Optimus and Elita; Ironhide and Chromia; and Techni and Blues, Jazz’s parents, had this. Also Jazz and Prowl, much to their initial irritation.
Master-Apprentice Chain: In effect whenever Optimus and Megatron fight, or Bumblebee and Barricade, since they were trained by Prowl and/or Terratron, Prowl’s master.
Mindlink Mates: The Bonded (married) Cybertronians. It requires a great deal of trust, and causes big problems if one of the pair dies. This is one of the reasons Prowl and Jazz aren’t Bonded at the beginning of the story, despite everyone’s assumptions that they are. This is also why the mysterious Decepticon Powers-That-Be won’t let Megatron Bond with Nightbird.
Mind Rape: Installing restrictive programming (which can create an alternate personality) in someone else’s mind. It’s almost as bad when you do it to yourself.
Mind Virus: The restrictive programming that Megatron was under is infectious.
More Deadly Than The Male: Elita-One is physically tiny (compared to her mate –she’s still huge in human terms). She is also much more violent and downright terrifies Megatron and Sentinel Prime. This seems to be the norm in-universe –a traditional femme frame might not be as strong as a mech’s but it is usually faster and potentially more lethal.
Mouthy Kid: Torch, Wheelie. Young Jazz had touches of this. Sunstreaker and Sideswipe used to be this, and still embrace it as a persona.
OOC Is Serious Business: Megatron in the Peril Arc so, so much. Two words: "Save me.". His first out of character moments in the flashbacks from the beginning of the war as well. Also, Prowl’s breakdown when Jazz dies.
Mikayla's breakup with Sam and her treatment of Wheelie and Bumblebee seemed a little abrupt and unnecessarily vicious for her character. We should have been paying attention!
Papa Wolf: Ratchet, Optimus Prime, and Ironhide. Optimus scares everyone when he finds out how badly the agents who took Quicksilver in treated him, and Ratchet tries to shout down a general who keeps disrespecting Prowl.
Precision F-Strike: Prowl rarely swears, but when he does, it’s heartfelt and spectacular. He learned from the best. (Detrious, Ratchet, and Terratron) Also notable is Ratchet’s Anguished Declaration of Love to Wheeljack, and Faust’s reaction to Starscream’s offer of training.
Raised by Natives: Faust, Æther, Alchemy, and Viridian. Quicksilver and Wheelie as well, at least somewhat.
Relegated Mentor: Terratron embraces this with grace and dignity. Sentinel Prime does not.
Renowned Selective Mentor: Terratron, so much so that his students aren’t usually allowed to meet each other. It's a very big deal when he finally allows it.
Royals Who Actually Do Something: Pre-War Megatron, Optimus, Elita, and Nightbird are well-known and loved on Cybertron for this. They were working-class before becoming the leaders of Cybertron, and they still like doing things with their hands, Optimus especially.
Ruling Couple: Optimus Prime & Elita-One, as well as Megatron and Nightbird. Despite Optimus and Megatron being the ones with the Matrix/official title, their consorts are held as equal (or at least, equally capable) ruling partners. It's Elita who takes over as leader of the Autobots in the Revenge Arc, rather than Prowl, his second-in-command in the military aspect.
Now that Elita-One is a Prime in her own right as of Ch. 64, it's a more straight example.
Sex for Solace: Averted with Prowl and Sunstreaker. Not that Smokescreen and Kup believe Sunstreaker and Bluestreak about this right away.
Sexless Marriage: One of the reasons Nightbird knows something’s very wrong with Megatron in the Overture Arc flashbacks
Shipper on Deck: (also Amazingly Embarrassing Parents ) The Autobots really enjoy this. Ratchet, Wheeljack, Blues, Techni, and Terratron all ship Jazz and Prowl, who in turn ship their son with Bumblebee (Optimus Prime ships this too), as well as Bluestreak with Sideswipe and Sunstreaker. Optimus Prime also ships Sam and Carly.
Tangled Family Tree: Hoo boy. Ratchet and Wheeljack’s dysfunctional clan of children and adopted children is huge. Apparently this is true for many Cybertronian families.
Underestimating Badassery: Jolt does this to Bumblebee, and Megatron does this Optimus when they have their first fight as Prime and Lord Protector. Terratron’s other students (besides Jazz and Megivor) do this to Prowl –but only once! Starscream underestimates Faust, too.
Ratchet and Prowl call Sentinel Prime out on resurrecting Detrious and then ignoring his unstable mental state. And also waiting to reveal the fact that he's become a Nay-Theist until the worst (or best) possible moment.
Megatron, Optimus, and Elita give him a what-for for breaking into Optimus' office (and then lying about having called ahead) and interrupting a moment between Optimus and Elita.