Post Robots in Disguise 2015, unnamed Cybertronian bar;

Swish, swish, swish.

Ding-a-ling!

The bartender glanced up from wiping the counter. Two young, reckless, loud mechs entered, laughing and poking at each other. They were twins, obviously; a rare phenomenon for cybernetic beings. One a shiny red, the other an even shinier yellow.

"Ah, Sides, it's good to have you back!" The yellow one elbowed his brother playfully as they took seats at the bar. "How could you stand being on that backwater planet for so long? Your paint's looking a bit scratched," he teased.

"Sunny, you know it doesn't matter to me," Sideswipe chuckled.

Sunstreaker raised an optic ridge. "Really? I hear femmes like a mech who will keep his appearance appealing," he smirked, tilting his helm to bring light to a group of young femmes, chatting away at a nearby table.

Sideswipe's optics widened as a devious smile spread across his faceplate. Without warning he whistled a catcall, wiggling his optic ridge at them once he'd caught their attention.

One of the femmes laughed and shook her helm, returning to the conversation. Her companions seemed unamused, however, and paid him no mind.

"C'mon, Sides, don't be such a Megatronus about it," Sunstreaker encouraged as his brother fell into a pouting state. "We wouldn't want a murder here, now."

A loud crash came from behind the counter and the two turned to the humble bartender, who had dropped an empty cube. "Pardon me," he excused, hurrying to the back to clean it up.

The twins glanced at each other in confusion. What was that about?

The tender returned, cleaned up the mess and gave attention to the customers.

After ordering, Sideswipe ventured "Were you eavesdropping on our conversation?"

"I was not trying to listen, if that is what you're asking," the tender told truthfully, busying himself by making their drinks. "But one can hardly be blamed, considering the volume coming out of your voice boxes."

"You can't blame us for that!" Sideswipe defended.

"You're right, it's just you to blame," Sunstreaker snickered.

Ignoring his brother, the red mech continued "Besides, there's a lot worse we could be than loud."

"You are speaking of being like Megatronus, now?" The old bartender challenged, raising an optic ridge skeptically. "As if you would know what he was like; you are barely past youngling age."

"Pfft, just because you're older doesn't mean you're better than us." The red mech crossed his arms.

"I did not say anything of the sort."

"Yeah, you did!"

"Calm down, Sides, it's just an old mech trying to get up your tailpipe," Sunstreaker tried, gesturing for the door. "Besides, the Age of Primes was too long ago for even he to have existed."

"Is that what you think?" The bartender smiled a bit. "I am flattered you believe me to be so young."

The two turned back to the old mech, optics narrowing suspiciously.

"You will not believe a witness of the events you speak of, but will take myth and lore as fact?" The tender shook his helm. "That is not a wise way to treat your lifecycle."

Leaning forward threateningly, Sideswipe shot the old bot an unconvinced glare. "And why should we believe you?"

"I cannot give you an answer...," the tender sighed, continuing to clean.

Sunstreaker grabbed his drink and motioned for the door. "We're done here."

Sideswipe followed, helm held high as though he were walking away the triumphant one.

"But I can offer you some perspective."

The two turned back, curious but doubtful and unwilling to let themselves come across as curious.

"Swallow your pride and learn something today," the old bartender challenged without looking up from his work. He heard the thud of them retaking their seats and smiled.

"You know him as the first Decepticon, the Fallen, the ultimate evil, a foul being bent on the destruction of both Primus - our planet, and Unicron - the world known as Earth.

"You've probably heard the legend of the Primes, and how Primus created the Thirteen to defeat Unicron, and after casting him out how the infighting began and Solus was murdered by Megatronus.

"If so, let the legends be legends and facts be facts; for I am about to tell you the true tale of Megatronus."

A/N: Some speculation for what Megatronus Prime was really like. It's called a fan fiction for a reason - I don't own any characters, just the plot.
Challenge: can you guess who the bartender is?