Shouldn't the Decepticons be evil?

When I heard the word Decepticons pop up on the radio; the name sounded odd, freaky, and quite wary.Perhaps that was just me.And then the very word Autobot came up too, strangely, on my radio.I mean the radio is not a announcer to declare I am not normal.I parked my car to the side of the road only to nearly be killed by it.A robot with blue optics, declaring itself to be a Decepticon swooped in.Their name sounded deceiving to my ears;shouldn't the Decepticons be evil?
Started: 2.20.2015.
Completed: 4.8.2015 at 9:23 AM
Fandom: Transformers
Universe: Shattered Glass in Bayverse.
Type: Stand Alone.
Chapter goal: 12.