Sentinel watched Megatronus Prime as he practiced battling with Solus Prime. They looked so happy together. But Solus, being a bruiser to Megatronus' strategist, got the upper hand by backtracking and making Megatronus think he needed to run after her. She duped him.

She banged the handle of her hammer down sturdy on its tip and used the momentum of her run to swing her whole weight around suddenly. Her pedes struck Megatronus directly in the faceplate upon the rebound, sending the mech backwards to tumble. Even Sentinel had to clutch his chin in pain upon seeing that. Onyx Prime and Amalgamous Prime were mutually wincing with Onyx's wing coming up to shield his optics with an animalistic whimper though he peeked through the metallic feathers not long after.

Solus placed her pedes on both sides of Megatronus and stomped the end of her staff on the right side victoriously. Megatronus snapped out of his brief dizziness with tender blue optics peering up at her from an angle most bots would die for. Sentinel recognized the look, the other Primes didn't. After the battle, he waited a second after they passed before following them like the good little assistant of Megatronus Prime he was.

"Sentinel," the gruff voice said, "could you do me a favor and check with Alpha Trion about the reports of Quintesson activity please? I can't wait to break those creatures' skulls in."

Sentinel nodded in kind. "Yes, sir, Megatronus Prime. I shall be back."

He turned to leave but instead of following through with that, he hid behind a pillar to spy on the two. Most of the Primes were unaware that Megatronus and Solus weren't the best of friends. When they disappeared around a corner to "yell at each other" as many of the Primes often believed, Sentinel crept around to follow them farther into the great citadel.

He reached Megatronus' room further up and simply leaned against the wall while waiting for a decent fifteen minutes with a smirk. The yelling began, not really yelling in the correct context. It was Sentinel's cue to leave the front of the door and instead go to the nearest open arch to the outside. He jumped off and ignited his heel boosters to slowly hover close to the balcony of the quarters.

He cut off his flight from one balcony away from the target area so he could silently maneuver onto it. Megatronus' balcony had doors to the inside with large windows always closed by metal shades because he didn't like showing his real faceplates in his privacy...but that wasn't the only reason. The small slots of windows barely viewable were on the sides of the doors, and Sentinel knew the best angle to investigate them having done so for a while now.

The room was dark with only orange bio lights outlining some of the farthest walls, displaying tidbits of their shadows though the balcony windows. The thin strips of Iacon's night cityscape reflected off Megatronus' purple mask set to the side. Megatronus' face was shrouded in darkness with a few strips of light and the glow of the room barely showing off the angles of his structure and silhouette.

Solus, on the other hand, had enough light on her being aligned with the farthest side windows opposite of Sentinel's side on the balcony to make out many of her details. Sentinel was entranced by her moans. Oh yes, they were fighting alright. Their glossas were fighting, she was pinned to the wall with her legs around Megatronus' waist and their hips were fighting, oh and they were probably fighting at who could keep the other pinned because Solus looked like she was very close to just throwing Megatronus to ride him.

Megatronus' quarters were always said to be a mess because of his abnormal physical strength and rumored hidden anger. Sentinel knew different. It was because the two constantly wrestled and destroyed the room among their intimate roughhousing. They both liked it. There were plenty of cracks in the walls, some broken layers, and it was the hottest thing Sentinel saw. It could easily be mistaken as fighting.

Sentinel knew about the truth because he once got curious as to why Megatronus never showed his faceplate and hid behind a mask. It took him a while to learn the balcony was the only way to peer into the room albeit vaguely. From there, he had discovered a whole different world of Megatronus'. Relationships among the Primes with each other or with citizens was strictly prohibited. Sentinel found that stupid and apparently, so did Megatronus and Solus because they had been humping each other like cyber-rabbits for years.

Since then, Sentinel found his favorite Prime getting some a way he could too indirectly. While he watched them currently, he listened to their hard grunts and groans as he pulled out his spike. He saw a sliver of Megatronus' faceplates kissing Solus' neck as his spike quickly impaled her hidden valve. Sentinel saw vague scars across the mech's left cheek and chin. One deep one briefly outlined went between the smaller and ran up and around the left optic. Battle damage or Solus' love scars? Sentinel wondered that.

He kind of got a possible answer when after bouncing on Megatronus' member, she tipped them with a mischievous grin and swung Megatronus down with her onto the floor. The hard fall made the balcony feel a small vibration that shocked Sentinel, but he refused to stop stroking his spike seeing Solus now on top a pinned Megatronus.

She was insatiable. Her fushia and gold colors radiating even in secluded darkness. She had Megatronus by the throat, choking him in some type of power play while Solus slammed down hard with fleeting hums and gasps.

"You like that, soldier?" Solus asked with a hauntingly aggressive voice.

Megatronus took hold of her hips and made himself thrust up amid her bounces to have her grind against him. "I live to serve you, my queen."

There was a small degree of lust he craved unlike anything he normally wanted. What he wouldn't give to be with them, to let Megatronus frag him or maybe get Solus to dominate him. He was especially turned on when she briefly let go of Megatronus' neck and he tried to look up, but she slammed his helm down amid licking her lips.

"Down, mech. Your queen didn't say you could get up."

Sentinel timed the sounds of their rut to his own service, keeping as quiet as possible when his system pressure heated up. Solus' growing cries of confidence were bringing him closer than ever to orgasm. Megatronus seemed to be in agreement with him unknown for the larger mech was almost completely submitted to her whim.

"Yes! Yes! YES! Argh, FRAG YES!"

Her deeper, dominant tone on the last shout made both Sentinel and Megatronus coincidentally overload simultaneously. Now he understood what Megatronus liked about her. She was the Queen of the Primes for sure. As Sentinel released over his servo and part of the balcony, he swiftly tried to clean up out of fear and saw Solus going after her own overload with sharp hip movements. Poor Megatronus was forced to be edged out to the maximum of his leg shaking overload with a hearty, hissing laugh.

Solus won this round.

Sentinel made his escape easily having done it over a hundred times now. When he saw them in public after doing what he was told...which he almost forgot about and that would have been bad...they were just regal, nice Megatronus Prime and Solus Prime. Always at attention and very kind to the citizens who had no clue how they were behind their acts.

It amazed him how easy it was to put on a facade like this. One way in front of the masses but totally different in the privacy of their lives. It made Sentinel wonder if Nexus' fleeting comment about Amalgamous' shapeshifting ability being useful for some good fun wasn't talking about friendly battle either because he also knew Onyx and Nexus were described as close friends with Nexus shifting to Amalgamous recently like he was trying to make Onyx jealous. Sentinel never pried that far into their relationships like he did with his idol, Megatronus.

Sentinel managed to figure out Solus was horny after a good battle and celebrated victory by having Megatronus frag her. Occasionally, they would switch with Solus using Megatronus' valve. But as long as she was secretly in control, Megatronus was all game. He was down to do anything with his beloved mate. Megatronus, however, was incredibly horny when he got it in his processor. It could be out of the blue. Solus knew this and would sometimes deliberately turn him on by doing something that showed off her aft or did something only a powerhouse like her could accomplish to satisfy his hidden lust for brutality.

There were tells to this and each time Sentinel was in the mood, he flew up to watch them and masturbate. He saw Megatronus' desk get destroyed twice after being replaced, brand new repaired berth after Solus smashed the last one from going down too hard and it didn't live too long, and he was pretty sure there was Energon blood on the ceiling, not just regular Energon, but he missed out on the night that occurred to say for sure.

He was once rubbing one out seeing Solus with a servo on the wall, knees on the berth, and her exposed valve covering Megatronus' faceplates. He could tell Megatronus was eating her out like a buffet from how loud she was. Lucky mech. Hell, lucky femme too.

It irked Sentinel how he was only allowed to imagine them including him or being in one's place. While they were nice, they would never see him as anything less than. He would change that one day but for now, he dealt with the rare spectacle that was Solus' chest and servos flush against the wall and facesitting the great Megatronus Prime like he was a bitch.

He suddenly heard a bang the moment he wasn't looking and turned to see Megatronus had placed Solus roughly on her back and he kneeled on the floor to bury his face in her valve his way. The movement had caused a few cracks to appear next to Solus' shoulders on the berth lip, but she was otherwise uncaring about the hit, shrugging it off like it was nothing. Megatronus had a firm grip around her thighs with his head between them.

It gave Sentinel a far better view of the action, making him blush profusely as his own pleasure heightened. Solus came not too long after the change and then Megatronus climbed on top of her. It was things like this that also kept Sentinel coming back for more.

Another time, Solus had tied Megatronus up and made him bend over so she could ram her spike into his valve. That was one of the best overloads Sentinel had. He caught them breaking the berth...for the umpteenth time and still continuing with their lovemaking. On the rarest occasion, Megatronus and Solus were simply just laying on one another...

That made Sentinel pause when he stopped by and saw that. Instead of wild interface and daring stunts to trash the place, he saw Megatronus leaned against the broken, tilted berth with his mask on but had Solus just resting casually sitting on his lap with her cheek against his chestplate and nuzzling him for comfort. They both had their optics closed, none of their equipment out. They looked for once serene and gentle.

Sentinel stared at that scene with something he had never considered before. Sentinel was envious. Here were two Primes, gods in their own right, sharing mortal lust and at the end of it, they also had something he hadn't encountered: love. The powerful Megatronus had the abilities, the impressive weaponry, and the vast strength he initially desired secretly, but he also had a healthy relationship, adoring fans and a loving mate. Sentinel wanted everything of his deep down.

He wanted power and control like they did, but he also wanted the love, the devotion of others that the Primes could create. Envy of that ability to take love without even trying ate at him. Envy scourged his circuits seeing this moment of peace between the two lovers. Why did they get to have all that? At first, he was into spying on them for fun, but this particular instance put a damper on that. This made him see green, especially as Megatronus' helm naturally lowered to rest against the top of hers.

Sentinel's servos clenched into fists, and he tore his optics away from them. Petty jealousy crept up his spine. Megatronus had everything. Why couldn't he? He was seen as just the assistant to the Primes, seeking miniscule pleasures from watching them do whatever they wanted and take whatever they needed. It certainly gave him a good show, but how long before being in the audience turned stale when he had a chance just as much as they did to run the show?

In a way, the sudden change from ravenous interface to cuddling also marked something he didn't like. Like a sign from Primus, Sentinel found this change a mark of their ability to move past everything. The Quintessons were looming as common threats and here were two Primes doing everything short of making new sparks, assuming they could have sparklings at all. Everyone else had to live knowing the threat was there. The Primes had the ability to drown that out and leave people like him behind.

Sentinel didn't stay long after seeing their cuddling having lost his appetite for self-service. The next day, he just did as Megatronus asked of him normally. But he couldn't help but glare behind the Prime's back. He thought about revealing their relationship to the world. The scandal would be disastrous...but where would that leave him afterwards? No, he wanted something more.

Granted, he didn't abandon his free shows on Megatronus' balcony, but he started being a little more spiteful in the wake of it. Even as he played with his spike, he imagined himself in Megatronus' place where he felt he should be. Right now, Megatronus was pounding Solus up a wall. He didn't care if it was Solus there or not, he just wanted to be Megatronus. As the most powerful, it just made sense to him.

The envy growing within him fueled his desires and made a new experience in his pleasures. Everything felt dominant; everything felt right for once. But what would he be willing to do to take it? Well, he had one idea but if he did it, there was no going back. And planning it would take time. It would make him a god. Never again would he have to resort to pleasing himself under the image of another. He would take the devotion just like Megatronus would. As a Prime, everyone would want to be with him. Everyone would love him like Solus loved Megatronus.

But, for now, he stuck with playing along being their little apprentice. After all, the view was to die for.


AN: A quick little dive into one thing that may have fueled Sentinel's desire to be seen. Sheer jealousy of more than just position. Technically, it was never confirmed that Megatronus and Solus are together in this universe but sometimes, it feels better to stick with tradition.