Megatron: Is there anyone brave - or stupid enough - to oppose us? This city is under martial law... and I am the marshal.
Megatron: Power flows to the one who knows how. Desire alone is not enough.
Hot Rod: This is ridiculous. Doesn't he know who we are?
Kup: Maybe we should get a new P.R. man.
Quintesson Commander: Besides, how can you be so sure we are the ones who betrayed you?
Galvatron: Well... you all do look alike.
Starscream: I will rule the universe, even if I am the only one left in the universe.
Sky Lynx: Save your ammunition, Autobots! Superior forces are taking over.
Springer: Well, well, Commander Modesty's here.
Optimus Prime: Give it up, Megatron.
Megatron: Can't Thrust carry out a simple mission?
Starscream: I think the answer is obvious.
Blaster: We're outgunned, man! We don't have a chance.
Kup: Boy, that's what makes life interesting.
Rodimus Prime: Or over.
Ironhide: What did you do to Gears? You turned him - nice.
Rodimus Prime: Last big party of the summer, folks! Let's go out with a bang.
Ultra Magnus: Just once, couldn't your attitude reflect the gravity of the situation?
Rodimus Prime: Not if I can help it.
Blitzwing: Sometimes it's better to be known for one's enemies.
Rumble: If on Decepticon turf you happen to tumble, look out now, 'cuz here comes Rumble.
Ultra Magnus: I've never seen anything this beautiful in the entire galaxy - all right, give me the bomb.
Sweeps: My guidance system has been hit! Galvatron, help me.
Galvatron: Please meet your end with dignity. I despise whiners.
Jazz: We'll be right back! Just don't move.
Omega Supreme: Sarcasm not appreciated.
Jazz: Maybe Ironhide's ready for a nice, cushy office job.
Ironhide: Stop talkin', tighten your shock absorbers and get in. We're gonna make a new river.
Megatron: Your knowledge is only overshadowed by your stupidity.
Answer: This was actually one of many errors in Transformers, the Constructicons MUST have been built on Cybertron, the only transformers genuinely built on earth were the dinobots, reason being Vector Sigma has to give personalities to each and every robot, else they end up like the dinobots, very simple and dumb. For reference watch the episode "The Key to Vector Sigma" which introduces the Stunticons and Arielbots - both Megatron and Optimus Prime have to go to Vector Sigma to get decent personality traits installed, prior to this the new robots are controlled by remote controllers and have no AI.