[The most treasured goodbyes are the ones where you don't have enough time. What time you do have you'll never let go of. Optimus had learned that early on. Not that he would deny his team the chance to say goodbye properly, but...sacrifices had to be made when it's for their future.

Even if he wasn't in it physically.]

I entrust the rebuilding of Cybertron to you, Bulkhead. May the planet once be illuminated in all its glory.

Until then, I will watch over you.