You didn't go Transmetal just to eat a sandwich! You have power to usurp! Besides, isn't fanfiction on your side? In most stories you've read where you've become a Transmetal, you've smacked Megatron down.

So, you fly off to find your boss. Not surprisingly, he's on the dining room table. "Megatron!"

Megatron looks over. "You've been playing in Tarantulas' toybox, haven't you, Terrorsaur?"

"Hand over leadership of the Predacons, or prepare for a spank-load of pain!"

For a moment, Megatron just stares at you. "You've been hanging around Wayward's brother, haven't you?" he asks. Then, "But ... I don't think I will, no. Your little takeover attempts are so First Season."

You draw yourself up. "I kicked your aft in Power Surge and I can do it again!"

Or can you? How are you going to attack?

Transform and attack?
Don't be silly. Beast-modes never have weapons.