1980s

B.O.T.

This last episode of season two has it all! Protectobots, Combaticons, Insecticons, a military dictator, and kids we've never seen before but are supposed to care about!
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Masquerade

Optimus, Sideswipe, Jazz, Windcharger, and Mirage go undercover as the Combaticons in order to find out the nature of Megatron's latest evil scheme.
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Revenge Of Bruticus

When the banished Combaticons conquer Cybertron, and use the planet's energy to push the Earth into the Sun, Optimus and Megatron must work together in order to stop them.
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Starscream‘s Brigade

Starscream creates his own group of Combiners, which he names the Combaticons. Together, they attempt to overthrow Megatron.
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Cosmic Rust

Megatron contracts a metallic plague which Preceptor helps cure through the use of his newest invention: Corrostop
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Trans-Europe Express

The Autobots must battle the Stunticons and protect a revolutionary race car or Megatron will be able to control Earth's weather.
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War Dawn

The Aerialbots are sent nine million years into Cybertron's past and have to make sure Optimus Prime falls in love at the Enchantment Under The Sea dance.
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Aerial Assault

The Aerialbots stumble on a Decepticon scheme to harvest energy from the Middle East, and meet the Combaticons a number of episodes before we first meet the Combaticons.
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The Search For Vector Sigma: Part II

Combiners. Combiners! COMBINERS! This episode has Combiner Transformers, which combine into giant Combiner robots! Combiners!
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The Search For Vector Sigma: Part I

Megatron builds five new powerful Decepticons and travels to Cybertron, where they gain cool powers. Then Optimus does the same thing because he's his own man.
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Hoist Goes To Hollywood

A bunch of Autobots get used by the Hollywood system while Megatron tries to steal another one of Wheeljack's McGuffins.
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The Girl Who Loved Powerglide

Powerglide forges a new friendship with Astoria, the CEO of Hybrid Technologies, when he has to save her from Megatron's latest evil plan.
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