Starscream

You are a human who wears a pendant with the Decepticon emblem around your neck. It turns out to be an unusual piece of jewelry, thanks to which you have learned to move between your reality and the Transformers' reality.
BUT!: in their reality, your height will change, making you slightly taller than a normal person (let's say, somewhere above Starscream's knee).

One such day, you arrived at the Nemesis through the portal opened by your pendant. After wandering the corridors for a while, you heard sounds coming from the command bridge. Frozen, you listened, but then moved on. A few more minutes passed, quieter minutes. As you turned the corner, you accidentally bumped into someone. Jerking in surprise, you looked up and saw the tall, slender figure of the commander—Starscream—standing before you. But for some reason, he was slightly scratched and clutching his shoulder with his clawed manipulator. "Someone hurt him..." flashed through your mind at that moment.

The atmosphere of two realities, one of which is Transformers: Prime.