I took "which transformers r u?" quiz. this is the result. :)

You are the supreme leader of the Decepticons! You believe that only those with the strength to take power should have any power at all, which means that you should have the most. Anything and anyone that gets in the way of your goals must be eliminated. Aside from your astonishing power, you are also incredibly smart. This allows you to keep one step ahead of those who would try and take you throne and even use their treachery to your advantage.