you were once friends with Orion and D-16. And Orion always feels like you and D-16 are more than just friends to him. You were once a family.

once.

the day Orion became "Optimus Prime", you choose the same path with Megatron, the former miner, the corpse memories of D-16.

one day, at the surface, Optimus saw you with the new logo on your chest plate. You can see on his face, sadness and regret

"We could have built the future together..." Optimus said bitterly. "I've trained with Elita-one and Bee, and yet i can't prepare for this moment, my friend..."