The Decepticons are the primary antagonists of the series. Despite being a military force, unlike the Autobot Elite Guard they have no clear hierarchy, Megatron is the sole leader and every other Decepticon is his inferior. The majority of Decepticons transform into military vehicles, mainly aircraft, and carry projectile weaponry such as guns, cannons and missile launchers. The Decepticons in this series are shown to be bigger, stronger, and more powerful than the Autobots. It takes a group of Autobots to defeat one lone Decepticon, but Optimus Prime is the first Autobot shown to defeat Megatron alone.
The starting members of the Autobots included Jazz and Ratchet . Sentinel Zeta Prime was the leader of the Autobots for much of the war. Orion Pax took the name Optimus, not yet holding the rank of Prime, during the war. He was likely second-in-command or just field commander of the Autobots. Ultra Magnus joined the Autobots around the time of the Battle of the Hydrax Plateau . His regiment was named the Wreckers and fought the Decepticons alongside other Autobots. After Vos was destroyed, several Seekers joined the Autobots and became known as the Aerialbots . After the destruction of Praxus , Prowl and Ironhide joined the Autobots. During the Battle of the Tagan Heights , Defensor was built. Bumblebee joined the Autobots before he lost his voicebox by Megatron's claws at Tyger Pax . Jetfire joined the Autobots after Megatron took over the Trypticon Station . The Dinobots joined the Autobots before Transformers: Fall of Cybertron . Omega Supreme was activated during Transformers: War for Cybertron . During Fall of Cybertron , Metroplex was also activated and helped the Autobots. Smokescreen joined the Autobots after Team Prime landed on Earth . The time that the other Autobots joined the group is unknown. Any Autobots after the war seem to be either law-enforcement officers and ordinary civilians rather than warriors and military soldiers.
2001 — The Transformers — DVD Box 1 (Pioneer LDC) — Japanese audio only.
2002 — The Original Transformers — Season 2 Part 1 ( Rhino Entertainment )
2002 — The Original Transformers — Season 2 Part 1: Vol. 4 (Rhino Entertainment)
2003 — Transformers — Season 2 Part 1 ( Metrodome )
2004 — Transformers — Collection 2: Series ( Madman Entertainment )
2006 — Transformers — The Complete Generation One Collection (Metrodome)
2007 — The Transformers — Complete Collection (Madman Entertainment)
2008 — Transformers — Volume 04: Stagione Due Parte Seconda ( Medianetwork Communication ) — English and Italian audio.
2009 — Transformers — Season Two: Part One (Metrodome)
2009 — The Transformers — Complete Collection: Decepticon Edition (Madman Entertainment)
2009 — The Transformers — Season Two, Volume One: 25th Anniversary Edition ( Shout! Factory )
2009 — The Transformers — The Complete Series: 25th Anniversary "Matrix of Leadership" Collection (Shout! Factory)
2011 — The Transformers — The Complete Original Series (Shout! Factory)
2014 — The Transformers — Season Two, Volume One: 30th Anniversary Edition (Shout! Factory)
2014 — The Transformers — Roar of the Dinobots (Shout! Factory)
2014 — Transformers — The Classic Animated Series (Metrodome)