Megatron challenges Optimus to a battle in which the loser and his team are exiled from Earth forever.




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Episode credited cast:
Scrapper / Construction Worker (voice)
Grimlock / Long Haul (voice)
Arthur Burghardt ...
Devastator (voice)
Spike Witwicky / Construction Foreman (voice)
Optimus Prime / Ironhide / Halonix Maximus - Hound's Hologram (voice)
Chip Chase (voice)
Cliffjumper (voice)
Chris Latta ...
Don Messick ...
Ratchet / Scavenger (voice)
Snarl (voice)
Hook / Slag / Bonecrusher (voice)
John Stephenson ...
Huffer (voice)


The Constructicons attack a construction site and steal energy machine parts needed for Megatron's current scheme. With this done, Megatron challenges Optimus Prime for a duel according to Cybertron law: the leaders of the opposing armies engage in one-on-one battle, without additional reinforcement, and the loser must exile himself and his army to deep space for eternity. Optimus, confident that he can beat Megatron under these terms, agrees. The Constructicons assemble the stolen components into power-transfer machine, which Megatron uses to obtain the powers of all the other Decepticons - against the combat rules. To ensure that the Autobots will not discover the cheat, Megatron sends the Constructicons to the Autobots' headquarters, so they will destroy Teletraan 1 while the Autobots are watching the battle. During the battle, Optimus fights valiantly, but multi-powered Megatron has the upper hand from the beginning. It seems Megatron's plot succeeds, but he forgot one important ... Written by Optimus Prime

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Release Date:

15 December 1984 (USA)  »

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Did You Know?


In many shots, the animation has a distinct stylized, anime-like quality that's rarely seen in any other episode. See more »


Devastator's head design varies between having two eyes and one big visor from shot to shot. See more »


Megatron: Soon, Starscream, soon, Scrapper's invention will give me the power to defeat the Autobots once and for all!
Starscream: [sarcastically] Forgive me, but I believe your boast sounds vaguely familiar.
Megatron: We've failed before through no fault of mine! But this time, I shall not be denied. This device will enable me to strike at the Autobots through Optimus Prime's only weakness: his over-developed sense of honour
[Megatron laughs viciously]
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User Reviews

"Nothing defeats the Devastator! Nothing!"
27 June 2009 | by (United States) – See all my reviews

Heavy Metal War is one of the best episodes from the original Transformers series. It has a great battle between Optimus Prime and Megatron, and also is the first episode to feature the Constructicons.

Megatron challenges Optimus Prime to a one of one battle with the loser being forced to leave Earth forever. To help ensure his chances of winning, Megatron uses the power chip rectafiers from all the other Decepticons to gain their powers and become more powerful. Megatron also sends the Constructicons to destroy Teletran 1 so that his cheating will not be detected.

This is a great episode. The battle between Megatron and Prime is interesting. I always wondered how the Autobots could not suspect anything unusual as Megatron is using abilities that he never used before.

The main reason for this episode standing out is that it is the first to feature the Constructicons. The Constructicons are truly one of the best groups of Transformers ever. They get to do quite a lot in this episode and seeing them merge together to make Devastator is awesome.

Also the Dinobots get to appear again. They make any episode better in my opinion.

So overall this is one of the best Transformers episodes out there. One of the best from season 1 and one that I highly recommend.

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