Shout out to Milau_25 for the inspiration! Thanks for the creative freedom! 😄 Hopefully you and others enjoy!!
You've always known sentinel since you both were sparklings. You both played together all the time. As you both got older and went to academy and whatnot, you followed him around everywhere. Some would say you both were attached to the hip. Others disagreed - saying you would be lost if something were to happen to sentinel.
As you two got older, you started to grow feelings for sentinel - but his pride with working for the 13 Primes always got in the way. But you didn't mind - whatever it took to make him happy.
As you both were "young adults", Sentinel would boast to you about ideas to better Cybertron, and some days he would rant about his frustrations with the 13 Primes. You never worked directly with the Primes - you were tasked to be a security guard and currently was going through training to become one. The only thing you could do was believe everything Sentinel said.
After all... you did whatever it took to make him happy.
Even when you tried to make new friends with any of the other Bots, they would judge you the moment you turned your back around — they couldn't get used to the idea of a Cybertronian with different colored optics and a nasty gash under the right optic that had to get welded together.
You were involved in a nasty accident while you were still in the pods - one of the Cybertronian carriers accidentally dropped you and your face hit the ledge. Thankfully, a spare optic was around and your optic was able to be replaced, but no one realized until you switched online that you would have different optical colors. You don't remember your gash being welded shut as well, but occasionally you would feel a pulsing pain on your cheek.
Sentinel never saw you as different, though. He saw you as unique - a good kind of different. "With enough training and confidence - no one will get in between you and your dreams, Y/N!" He proudly smiled at you one day.
You only smiled back. Because he was your only friend. And you wanted to do whatever it takes to keep him around.
After work one night you saw him enter your home, slamming the door shut. You could tell by his body language that he was frustrated and pissed. "What happened?" You asked, hurrying to his aid.
"Those stupid Primes!" He boasted angrily, almost scaring you. "They don't know what they're doing, and they turn down my ideas! We need to take them out!"
"Take them out?!" You were shocked with his response. "But Sentinel-"
"They do nothing but destroy this planet, Y/N," he leaned into you some. "They aren't doing any of us favors - just lounging around doing whatever they wanna do! We need to take care of that problem!"
"W-We?! How?" You asked in a quiet tone.
Sentinel was silent for a second before a smug look appeared on his face. "We kill them."
"Sentinel, are you crazy?!" You hissed at him, looking around nervously. "What if they hear you??"
"Look at what they did to you- to us!" He grabbed a sheet of metal from your side table and held it up, revealing your different optic colors and welded scar on your cheek. "They did this to you! They don't listen to me! They do what they want, and we suffer from it! Did they ever apologize to you for the accident??"
You weren't sure what to do - believe in the 13 Primes or keep your best friend.
"Listen, I have a plan," Sentinel explained the entirety of it to you as he set the sheet metal down. "I'm going to lure them into a trap. I will send you the coordinates. If you will join me, meet me here to finish those old geezers off."
