Megatron: Is there anyone brave - or stupid enough - to oppose us? This city is under martial law... and I am the marshal.
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.
Optimus Prime: Give it up, Megatron.
Starscream: I will rule the universe, even if I am the only one left in the universe.
Megatron: Power flows to the one who knows how. Desire alone is not enough.
Optimus Prime: Just remember, there's a thin line between being a hero and being a memory.
Megatron: Your knowledge is only overshadowed by your stupidity.
Jazz: Maybe Ironhide's ready for a nice, cushy office job.
Ultra Magnus: I've never seen anything this beautiful in the entire galaxy - all right, give me the bomb.
Blitzwing: Sometimes it's better to be known for one's enemies.
Megatron: Can't Thrust carry out a simple mission?
Starscream: I think the answer is obvious.
Sky Lynx: Save your ammunition, Autobots! Superior forces are taking over.
Springer: Well, well, Commander Modesty's here.
Quintesson Commander: Besides, how can you be so sure we are the ones who betrayed you?
Galvatron: Well... you all do look alike.
Hot Rod: This is ridiculous. Doesn't he know who we are?
Kup: Maybe we should get a new P.R. man.
Wreck-Gar: Kemosabes Rodimus and Ultra Magnus, you are in danger of being cancelled or losing your time slot.
Ultra Magnus: What did he say?
Rodimus Prime: We're gonna get killed.
MindWipe: The powers of darkness are greater than anything your pathetic scientific toys can muster.
Ironhide: Stop talkin', tighten your shock absorbers and get in. We're gonna make a new river.
Jazz: We'll be right back! Just don't move.
Omega Supreme: Sarcasm not appreciated.
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.