Decepticon

"The Decepticons are an evil race of technologically advanced robots. They are on Earth looking for new sources of energy to defeat the Autobots and conquer the universe. Their transformation ability is used for the purposes of disguise--to spy without detection. Unlike the Autobots, the Decepticons have the power of flight. Although they have emotions of anger, greed, envy and disgust, they prefer mechanical efficiency over human feelings, and consider human life to be inferior and unimportant." - G1 series bible[1]

All Decepticons, ordered alphabetically.