Transformers Beast: Machines Season 1 Episode 11 - The Key Episode Title:The Key.Episode Description:Tankor uncovers an ancient weapon with the power to turn organic material into cybernetic metal. Nightscream gets hit by the weapon and the Maximals race against time to save him from going off-line, while Tankor's circuits overload for using the Key of Vector Sigma and permanently deactivates. While Megatron and the Maximals are unaware of his schemes, Tankor staged his own death by establishing a double before confronting the Maximals.