Re-watching TFP and Makeshift was such a underrated character. Lowkey wanted more of him, it's a pity that he died so quick. That being said, it's easier to add shit to him without worry! So;
Yandere! Makeshift (TFP) x Human! reader x Yandere! Soundwave
Yandere! Makeshift who is obsessed with you and stalks you via shapeshifting into other bots you are always with, namely the Autobots. Soundwave uses him as a way to observe you since they have to work together for Makeshift to actually shapeshift. Or perhaps Makeshift can change on his own, but needs Soundwave's data to make it a 1:1 copy, personality included.
Makeshift does not enjoy shapeshifting into the other bots since he'd rather have his true form talking to you, but you respond better to the autobots more than the decepticons. He tries to be accurate to his copied bot, he really does, but there are times where he accidentally mixes up the memory and personality of the bots. Even worse, his own true self slips in the conversation, almost exposing his obsession and his identity as a decepticon.
Soundwave and Makeshift likes to rendezvous after every meeting with you, comparing notes and sharing new information they have of you. Soundwave is lowkey jealous at the fact that Makeshift gets to interact with you without you running away or getting scared of him.
Makeshift LOVES being able to touch you and carry you wherever he can. I just realized he's one of the cons that used 'Lord Starscream' instead of just commander Starscream. You KNOW he's obedient and loyal, and that translates to you too. Although the other bots are already rather obedient, he takes it up a notch. His obedience is through the roof even in a form who is usually not like that. He follows commands with precision, making sure to do it down to it's specifics. And he adores following your commands, almost grovelling just to have you command him. He lives to serve.
I like to think that even outside shapeshifting, he still likes to stalk you. He follows you in car form, rolling just behind you to keep you in view while also keeping himself hidden enough. Though in Jasper, Nevada, it's almost quite obvious to see when someone is stalking behind you, especially a car.
Warning: Valveplug under the cut!
Ough Imagine though, you somehow got caught in between Makeshift and Soundwave, caught between two horny bots who's obsessed with you to the point where they know you down to the count of your hair (Soundwave does, he just shares it to Makeshift). Soundwave shifts Makeshift into him, getting pinned between two Soundwaves, identical to each other including the tentacles. One speaks, the other observes.
They both move their tentacles to restrain you, lifting you up and letting the smaller limbs at the end roam around your body, wriggling and teasing your sensitive skin. One slips inside you, and Soundwave..?, no, Makeshift curses, his pedes almost buckling at your warm insides. Another tentacles fiddles with your chest, and Soundwave— the real one— rumbles a robotic hum.
They both open their panels at the same time, one quickly, eagerly, opening with a loud clunk while the other opens it with patience, quieter than the other. Both starts fiddling with their array, Makeshift immediately plunging a digit inside his valve, lubricant dripping down onto the floor.
"I-i've been waiting for this, been wanting to touch you this way for so long…" Makeshift pants, shoving another digit inside of him as his tentacles roams around inside you.
On the other hand, Soundwave is focused on you, his 'face' projecting an image of you wrapped around their tentacles, you have a feeling he's recording this whole thing. He starts pumping his spike, letting one tentacle wrap around Makeshift's waist before engulfing the other bot's tip with the clawed end, the smaller ends poking and prodding at the entrance of the spike. Makeshift cries out once the rubber end slides in and his own tentacles lashes out, pulling Soundwave, you, and him together.
You wiggle to get yourself free but their tentacles keep you in place. You yelp in pain when Makeshift tightened his grip far more than what a human body can take and he freezes, immediately letting go of you and stepping back, his lubricant drenched servo raised up in the air in surrender.
"I'm sorry—!"
Before Makeshift could apologize, Soundwave pulls him back down with the tentacles around his waist. Makeshift folds and kneels in front of you both, the quiet bot lifts you down onto Makeshifts faceplate and shoves your privates onto his intake. Makeshift latches on quickly, fluttering his optics off as he licks and sucks at you, his glossa engulfing you. Soundwave pumps Makeshifts spike as a reward for following through with the silent command.
Soundwave must have gotten bored with his position so he makes Makeshift lay down, gently guiding you back onto the copycat's glossa when he started to whine for you. He forces Makeshift's legs open as he aligns his valve to his. His hips juts out, scissoring Makeshift under him as the other bot moans in pleasure against you and starts tasting you with more fervor.
Their slick clings to each other as they move quickly, Soundwave more robotically while Makeshift more erratically, eagerly trying to get to his overload. Soundwave stops him with his servo, forcing Makeshift to follow his pace as he raised Makeshift's pede high, gripping both of their spikes to froth against each other, their valves sliding with it.
Soundwaves tentacle moved from your nipples up to your mouth, letting the small ones explore your wet cavern. Their pace started to quicken and you knew their overload is close, their movement getting sloppy as lubricant pools under them. Their array glows brighter, their valves squished together tightly, sharing the slick in between them, their nodes catching each other. Soundwaves servo rubs Makeshift's tip, a low rumbling sound echoing through the room when you moan loudy at Makeshift's response to suck harder.
You felt yourself start to climax and Makeshift gulps it all down, squirting alongside you with his overload spilling all over his chassis and floor. You don't know why Soundwave did it, but as soon as Makeshift settles down from his Overload, he pulls back from Makeshift before shoving his spike inside the con's drenched valve, pounding into him until Makeshift overloads again, Soundwave right after and filling Makeshift up.
Your head lolls back to look at Soundwave, silently questioning why he did that. After a few seconds he replies in Makeshift's copied voice. "Wanted you. Makeshift, appropriate enough. Soon it'll be you."
You wondered what would have happened if you somehow turned into a cybertronian, yet you stay quiet in hopes to not feed into their delusions.
FUCKKKKK them with cybertronian reader, Makeshift and Soundwave fuck each other with makeshift shapeshifted into you. It's their filthy little secret. might even invite megatron too.