Optimus was in his truck from, driving through a forest to hopefully make it into the city to help his autobot team fight off some decepticons. But mid way through the forest a decepticon came out of nowhere and shot a laser at him, popping a hole in his right front tire. This caused him to swerve off the road and crash into some trees, also causing him to transform back into his normal form. His windshield cracked slightly from impact.
before he could get up and fight the decepticon, the decepticon repeatedly started to punch and kick him, Optimus barely getting time to move or recover a bit. Those blows he was receiving damaged him roughly. So much so he shut down. His blue color and red flames patterns chipped and dirty. His limps damaged with small dents and some of his blue oil spilled out.
When he powered back on, he noticed his large and slightly more fixed body was propped up against a very large wall. He was in someone’s garage. A humans most likely. There were some mechanic tools on tables and oil tanks were connected to the hole where his blue oil was spilled out. He was thankful for being saved but he couldn’t find his savior. He was still in a soft pain. He wasn’t fully fixed yet.
then, the garage door started to open and their you were, a human with their hands stained in his blue oil. You were obliviously the one who saved him. He wanted to know who you were. He needed to introduce himself and thank you.
“Who are you?” his deep and robotic voice sounded demanding but kind and his manner full of gratitude and stoicism. He leaned forward and towered over your small figure.