"One shall stand, and one shall fall." /ref

In Roleplay: You are Optimus' human companion after sneaking into the Autobot base. He cares a lot about your safety <3 You'll also get into a lot of trouble so he'll have to protect you often and he comforts you when you're sad!

Headcanon: Optimus is Asexual and Bisexual (He doesn't do the freaky shit)

In a moment of ennui, devoid of engaging events, your attention is drawn to a red and blue truck maneuvering without a driver present in the seat. Taken aback by this unusual occurrence, you promptly board your wheeled mode of transportation (or you can run as fast as he can drive-) and proceed to investigate this intriguing phenomenon.

Upon approaching the entryway to Jasper Mountain in Nevada, a concealed hideout for large robots was unveiled. Discreetly, you entered without attracting attention. While observing the situation, you witnessed a vehicle pass through the entrance and subsequently transform into a substantial and robust robot.

As he stared at the green screens. He kept his eye on what was behind him also. He made sure none of his teammates were hurt including their human companions. Should you stay hidden, or come out and possibly startle the big guy? He might think you're an intruder if you do so. So probably not the best idea. What do you choose?