Bulkhead Enemies

A Decepticon/Predacon member who first appears in the series Transformers Prime. Airachnid is a psychopath who kills for fun and sport, she enjoys wiping out entire species, and torturing her victims before killing them, she keeps the heads of her victims as trophies.

A triple changer Decepticon.

Paranoia ridden member of the Decepticon Stunticons

Dreadwing is a member of the Decepticons who appears in Transformers Prime. He is Skyquake's twin brother and is currently Megatron's new second in command.

Eradicons are Decepticon soldiers, also known as Vehicons in certain media (comic books, video games)

The strongest of the Insecticons. He claims to have personally killed several members of The Wreckers.

A super-villain from Transformers: Animated

Knockout is a member of the Decepticons, notably their doctor in Transformers Prime

A bounty hunter who likes to make trophies of his bounties upgrades and personal modifications. He usually works for the Decepticons.

A member of the Decepticons who made his debut in Transformers: Animated.

A member of the Decepticons capable of impersonating other Transformers.

The first Emperor of Destruction of the evil race of robots known as Decepticons. He hates Autobots and their leader Optimus Prime.

A super-villain from Transformers: Animated

A Scraplet is a creature native to Cybertron, they are veracious eaters, and eat any metal they can find, especially living metal like the kind Autobots and Decepticons are made of. Scraplets usually travel in swarms of thousands.

Leader of the terrorist group known as MECH, he is an enemy of the US Government and the Autobots. After being injured in his last encounter with the Autobots his team was able to place his body inside of Breakdowns lifeless shell. Was later reborn as a part cybertronian cyborg.

A Decepticon Communications Officer who is able to detect and jam radio transmissions all across the energy spectrum. His alternate mode is a Cassette Player (originally, it is now a jet).

Part of the Decepticons who is the Most powerful of the Seekers. Starscream is usually the scheming second in command to Megatron. Ultimately joined the Autobots in the Armada continuity. In the Prime series he is described as dead to the Decepticon cause by Megatron, but has really gone rogue.