The Transformers - Season 2 - Eps 40: The Key to Vector Sigma (2)
The Decepticons acquire the Key that will give them access to Vector Sigma. After using Vector Sigma, they find the Key is also capable of making organics turn into machines. Megatron prepares to use it against Earth and The Autobots will need new allies in this battle, but their creation will come at a high price.
About The Transformers

Title: The Transformers
First Air Date: 1984-10-06
Last Air Date: 1987-11-11
Status: Ended
Rating: 7.837/10 (from 386 votes)
Language: EN
Seasons: 5
Total Episodes: 95
Network: Syndication
Genres: Animation, Kids, Action & Adventure, Sci-Fi & Fantasy
Production Companies: Hasbro, Sunbow Productions, Marvel Productions, Toei Animation
Synopsis
The Transformers is the first animated television series in the Transformers franchise. The series depicts a war among giant robots that can transform into vehicles and other objects.
Cast

Peter Cullen
Optimus Prime (voice)

Frank Welker
Galvatron / Chromedome (voice)

Richard Gautier
Hot Rod (voice)

Jack Angel
Ultra Magnus / Cyclonus (voice)

Susan Blu
Arcee (voice)

Corey Burton
Spike Witwicky (voice)

David Mendenhall
Daniel Witwicky (voice)

Victor Caroli
Narrator (voice)

Stan Jones
Scourge (voice)

John Stephenson
Kup (voice)