I really wish we'd gotten to see the moment when Prowl's actual age hit home for Optimus.
He, Bumblebee, and Bulkhead didn't come online until after the Great War ended. Prowl, on the other hand, was in his adult frame and training with Master Yoketron near the tail end of the war (with little indication as to exactly how long he's been online already). And according to the show's official timeline on the tfwiki, there was a gap of over 1 million years between Yoketron's death and the first season of TFA.
And Optimus is the kind of guy to show respect/deference to any bot of higher rank or older age than himself.
So just imagine his face when he suddenly realizes that the rebellious, moody, lone-wolf Cyber-ninja that he's been trying to wrangle into a team player since before they landed on earth is, in fact, his elder.
request! Tfa!optimus prime & "battle against the true hero"by jenny!
I always imagine tfa optimus endgame battle,whenever I hear this song!
Oh boi this is FUN
"Every hero have to make a serious choice"Optimus said before he hold the Magnus Hammer.
"Fight with honour make the rivals fear your voice"he said as he turned around to look at the others.
"Die in battle to perpatuate your name or run from danger just to live another day"he remembers the line he read in history book.
"Real heroes never fear the pain or death.Every soldier fight until their final breath"he looked at the others with a smile before snapped on his mask.
"Dedicating all their lifes to just one cause..."he sighed before he fly to the sky with his jetpack.
"Serve the kingdom and apply the rules and laws"he remembers what Ultra Magnus had told him once.He grips the handle of the hammer tightly.
"Years of training giving all your blood and sweat.Get to the point where nothing is a threat"
Optimus closed his optics before getting ready to face Megatron.He's not afraid of him anymore.After the many battle with the Decepticons, he's prepared.
"Every battle will be just another day.Every human's just another one to save"
Optimus took a quick glance on the humans.After many days of protecting them from the Decepticons,he's glad to save them again.
"Raising their spears to the sky. Loyal soldiers keep marching on"
Optimus raised the hammer to the sky,ready for using it while keeping himself stable on the sky.
"Shouting in one clear voice"
His team heard him giving them orders to lead for their victory in a one very clear voice.
"Every single dream they have"
Optimus remembers how the others always talking about the dream they want to archives.
"Honor the ones who were gone. Fighting for the same noble cause"
Optimus remembers how Prowl honoring his master's sacrifice and fights for the future of Cybertronians.
"Away from home in the wild.Trying to survive alone"
Optimus remembers how brave his youngest teammates,Bumblebee and Bulkhead when fighting even tho they're so far away from Cybertron.Their planet,their home.
"Just because we fight,it doesn't mean.We don't have our own fragile hearts"
Optimus remembers Ratchet,fighting bravely on the outside but broken in the inside.
After the fight,
"If we could,we would go back in time.So we could prevent all these wars"Optimus spoke softly to Megatron who's cuffed.The warlord only stare at him.Not showing any glimpse of rage or anger.
"The real heroes stand until the end.But the biggest fight is inside"
Optimus look outside by the large window,staring at the stars and space.He look calm but he's not.
"Feelings clashing while you pretend.That the bloodstains one day will dry"Optimus shudders from the voice of Sentinel's insult back then when he got kicked out from the academy.
"Then you hear this voices in your head.Telling you it will be alright"
Then he remembers his teammates.His friends,his family.How they're standing with him till the end.
"But your heart keeps telling you again.Real heroes don't have to fight"
He closed his optics,telling himself that everything's is fine now.The war is over.
WOOO THAT FEELS GOOD
ALTERNATE TIMELINE: Winning timeline.Prowl lives!Also some drama in the possible future ;)
Was thinking about how old some Star Wars characters would be IF they lived to see the Force Awakens Timeline.
Have a SWR Ages Timeline (again) and TFA Ages Timeline for Hux, Poe, Kylo, Finn, and Rey.
EDIT! This chart is a little outdated, the most recent one (which is from 2018 so it could probably benefit from another look through) is located HERE!