Decepticons (Earth-7045)

The Decepticons are one of the primary factions in the Transformers mythos. They are typically concerned with such things as conquering Cybertron, defeating the Autobots, amassing large quantities of energon, developing powerful weaponry, and beating people up. Not necessarily in that order.

Unlike the Autobots, whose leader is a Prime bearing a Matrix, the Decepticons are led by the most powerful of their ranks. This tends to cause some conflict, given how generally every Decepticon thinks that they're the most powerful. Also, the Decepticons are not exactly the most compassionate beings in the universe, but not all fight for greed. More than a few have a sense of honor, while others believe that Cybertron would be better protected by aggressive expansion. Ultimately, the Decepticons desire to protect their homeworld, even if it is at the expense of others. Usually.

History
to be added

Current

 * Megatron I (2nd leader)
 * Blastcharge I
 * Galvatron I (temporary 3rd leader)
 * Cyclonus
 * Nightstick
 * Scourge II
 * Fracas
 * Abominus/Terrorcons:
 * Hun-Gurrr (leader)
 * Blot
 * Cutthroat
 * Rippersnapper
 * Sinnertwin
 * Acid Storm
 * Astrotrain
 * Axer
 * Banzai-Tron
 * Razor-Sharp
 * Barricade I
 * Frenzy II
 * Battlechargers:
 * Runabout
 * Runamuck
 * Battletrap
 * Bitstream
 * Blackout II
 * Scorponok II
 * Blitzkrieg
 * Blitzwing
 * Black Shadow
 * Blue Bacchus
 * Breastforce:
 * Deathsaurus (leader)
 * Eaglebreast
 * Tigerbreast
 * Liokaiser:
 * Leozack (leader)
 * Lionbreast
 * Drillhorn
 * Hornbreast
 * Guyhawk
 * Hawkbreast
 * Hellbat
 * Komoribreast
 * Jallguar
 * Jaguarbreast
 * Killbison
 * Bisonbreast
 * Calcar
 * Centuritron/Assault Mini-Con Team:
 * Heavytread
 * Runway I
 * Windshear
 * Charger
 * Fire Beast
 * Chopper
 * Clones:
 * Pounce
 * Wingspan
 * Combaticons:
 * Bruticus
 * Onslaught (leader)
 * Blast Off
 * Brawl
 * Swindle I
 * Vortex
 * Sky Shadow I
 * Counterpunch (actually Autobot Punch undercover)
 * Crankcase II
 * Crumplezone I
 * Crush
 * Darkwing
 * Throttle
 * Deadlift
 * Demolishor
 * Blackout IV
 * Detritus
 * Dirge I
 * Dispensor
 * Double Punch
 * Doubledealer (as Clouder)
 * Skar
 * Dreads:
 * Crankcase I
 * Crowbar
 * Hatchet
 * Dreadwind
 * Hi-Test
 * Duststorm
 * Fangry
 * Brisko
 * Fearswoop
 * Firecons:
 * Sparkstalker (leader)
 * Cindersaur
 * Flamefeather
 * Flip Sides
 * Flywheels
 * Fracture
 * Gravedigger
 * Gutcruncher
 * Hardtop
 * Horri-Bull
 * Kreb
 * Horrorcons:
 * Apeface
 * Spasma
 * Snapdragon
 * Krunk
 * Hotlink
 * Hydrotroopers:
 * Rage (leader)
 * Aquablast
 * Drench I
 * Hydradread
 * Incinerator I
 * Insecticons:
 * Shrapnel (leader)
 * Barrage I
 * Bombshell (formerly Greithoth: Breaker of Wills)
 * Needler
 * Chop Shop
 * Kickback
 * Pseudo
 * Ransack
 * Venom
 * Krok
 * Gatoraider
 * Lugnut
 * Mayhem Attack Squad:
 * Bludgeon (leader)
 * Bomb-Burst
 * Bugly
 * Carnivac
 * Finback
 * Iguanus I
 * Needlenose
 * Sunbeam
 * Zigzag
 * Octopunch
 * Quake
 * Heater
 * Tiptop
 * Skullgrin
 * Snarler
 * Spinister / Rotorblade
 * Hairsplitter
 * Singe
 * Stranglehold
 * Submarauder
 * Micromasters:
 * Skystalker II (leader)
 * Air Strike Patrol:
 * Whisper (leader)
 * Nightflight
 * Storm Cloud
 * Tailwind
 * Airwave
 * Battle Squad:
 * Direct Hit (leader) & Power Punch
 * Fireshot & Vanquish
 * Meltdown & Half-Track
 * Blackout III & Spaceshot
 * Cement-Head & Terror-Tread
 * Constructor Squad:
 * Sledge & Hammer (leader)
 * Grit & Excavator
 * Stonecruncher & Knockout
 * Flattop
 * Greasepit I
 * Military Patrol:
 * Bombshock II (leader)
 * Dropshot
 * Growl
 * Tracer I
 * Race Track Patrol:
 * Barricade II (leader)
 * Ground Hog
 * Motorhead
 * Roller Force
 * Roughstuff
 * Skyhopper
 * Sports Car Patrol:
 * Blackjack (leader)
 * Detour
 * Hyperdrive
 * Road Hugger
 * Mindwipe
 * Vorath
 * Misfire / Flyhigh
 * Aimless
 * Monstructor/Pretender Monsters:
 * Icepick (leader)
 * Birdbrain
 * Bristleback
 * Scowl
 * Slog
 * Wildfly
 * Octane
 * Oil Slick
 * Overlord
 * Giga
 * Mega
 * Paralon
 * Ped
 * Piranacon/Seacons:
 * Snaptrap (birth name Blasttrap) (leader)
 * Nautilator
 * Overbite (birth name Overboard)
 * Seawing
 * Skalor (birth name Sailor)
 * Tentakil (birth name Torrekil)
 * Predator Attack Mini-Con Team:
 * Dreadwing II (leader)
 * Overbite II
 * Sonar III
 * Predators:
 * Skyquake (leader)
 * Falcon
 * Skydive I
 * Snare
 * Stalker
 * Talon
 * Ramjet I
 * Ransack II
 * Reflector (Trio):
 * Viewfinder (leader)
 * Spectro
 * Spyglass
 * Roadblock I
 * Roadgrabber
 * Ruckus
 * Scorponok I
 * Olin Zarak III
 * Shockwave
 * Fistfight
 * Nitro
 * Sixshot
 * Skullcruncher
 * Grax
 * Skylance
 * Skywarp I
 * Thunderclash
 * Slipstream
 * Slugslinger
 * Caliburst
 * Smolder
 * Chopster
 * Snow Cat
 * Crumplezone II
 * Soundwave I
 * Cobalt Sentries:
 * Garboil
 * Howlback
 * Frenzy I
 * Overkill
 * Rumble
 * Slugfest
 * Squawkbox
 * Beastbox
 * Squawktalk
 * Wingthing
 * Springload
 * Squadron X:
 * Macabre (current leader)
 * Crosscut II
 * Earthquake
 * Fang
 * Ferak
 * Tornado
 * Starscream I
 * Swindle II
 * Stockade II
 * Storm Surge
 * Sunstorm
 * Take-Off
 * Screech
 * Terrain Mini-Con Team:
 * Overcast (leader)
 * Deepdive
 * Longarm II
 * Terrashock
 * Thrust I
 * Inferno II
 * Tidal Wave
 * Ramjet II
 * Treadhead
 * Treadshot
 * Catgut
 * Triggerhappy / Gunwing
 * Blowpipe
 * Trypticon
 * Brunt
 * Full-Tilt
 * Turbo Master
 * Underbite
 * Weirdwolf
 * Monzo
 * Wildfire
 * Windsweeper
 * Wreckage

Former

 * Aerodive †
 * Airstrike †
 * Blip †
 * Bombshock I †
 * Coelagon
 * Commandos:
 * Mega-Octane (leader)
 * Armorhide
 * Movor
 * Ro-Tor
 * Rollbar I
 * Contagion (unwillingly) †
 * Crankshaft
 * Deathcobra †
 * Cobrabreast
 * Devastator/Constructicons:
 * Scrapper (leader)
 * Bonecrusher I
 * Hook
 * Long Haul
 * Mixmaster
 * Scavenger I
 * Drift (birth name Deadlock)
 * Flatline
 * Freelance †
 * The Fallen (formerly Megatronus Prime) †
 * Flamewar
 * Frostbite / Astraea
 * Ion Storm †
 * Jetfire I
 * Jhiaxus †
 * Landquake
 * Liftoff †
 * Magnificus
 * Menasor/Stunticons:
 * Motormaster (leader)
 * Breakdown
 * Dead End I
 * Drag Strip
 * Wildrider
 * Nightracer I †
 * Nightstalker †
 * Nova Storm †
 * Offroad
 * Predaking †/Anicons:
 * Razorclaw I (leader) †
 * Divebomb II
 * Buzzsaw †
 * Laserbeak †
 * Headstrong
 * Rampage (formerly Protoform X)
 * Tantrum
 * Rack'n'Ruin
 * Ratbat †
 * Ravage †
 * Shockblast
 * Sideways †
 * Sky-Byte
 * Slicer †
 * Starscream II †
 * Straxus †
 * Terrorsaur (birth name Terrorsoar)
 * Thundercracker
 * Thundertron †
 * Topspin I
 * Toxitron
 * Triton †
 * Turmoil †

Current

 * Clench (leader)
 * Archforce
 * Autorollers:
 * Armorhead
 * Dirtbag
 * Roadblock II
 * Skyflash
 * Bulletbike
 * Cyberjets:
 * Hooligan
 * Skyjack
 * Space Case
 * Deluge II
 * Dreadwing III
 * Smokescreen II
 * Jetstorm III
 * Jolt II
 * Powerdive
 * Ransack III
 * Road Pig
 * Sizzle II
 * Skycorchers:
 * Windrazor I (leader)
 * Afterburner II
 * Eagle Eye II
 * Terradive
 * Tectonic †/Constructicon Clones:
 * Frontloader (leader)
 * Buckethead
 * Cinderblock
 * Drumroll
 * Hangman
 * Skipjack
 * Staxx

Former

 * Aero Raid
 * Jetfire II
 * Strafe II