The Transformers
S02E39 The Key to Vector Sigma (1)
The Decepticons obtain the Key that grants them entry to Vector Sigma. Upon activating Vector Sigma, they discover the Key can also transform organic beings into machines. With ambitions to wield it against Earth, Megatron gears up for a significant showdown. The Autobots realize they will need new allies for this fight, but the process of creating these allies will demand a steep sacrifice.
Season 2 Episodes
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Autobot Spike
The Immobilizer
Dinobot Island (1)
Dinobot Island (2)
Traitor
Enter the Nightbird
Changing Gears
A Prime Problem
Atlantis, Arise!
Attack of the Autobots
Microbots
The Master Builders
The Insecticon Syndrome
Day of the Machines
Megatron's Master Plan (1)
Megatron's Master Plan (2)
Auto Berserk
City of Steel
Desertion of the Dinobots (1)
Desertion of the Dinobots (2)
Blaster Blues
A Decepticon Raider in King Arthur's Court
The God Gambit
The Core
Make Tracks
The Autobot Run
The Golden Lagoon
Quest for Survival
The Secret of Omega Supreme
Child's Play
The Gambler
The Search for Alpha Trion
Auto-Bop
Prime Target
The Girl Who Loved Powerglide
Triple TakeOver
Sea Change
Hoist Goes Hollywood
The Key to Vector Sigma (1)
The Key to Vector Sigma (2)
Aerial Assault
Masquerade
Trans-Europe Express
War Dawn
Cosmic Rust
Kremzeek!
Starscream's Brigade
The Revenge of Bruticus
B.O.T.