The Code Keys, divided into the Key of Power and the Key of Justice, are necessary to open Teletraan-1.
Soundwave informed Megatron that one Code Key was located within the High Council Tower above Teletraan-1, while the other was somewhere underground around it. Starscream (ironically) found the Key of Power within the Hall of Justice, while Megatron was confronted underground by Sentinel Prime, whom he defeated for the Key of Justice inside his body. Starscream tried to take it, but Blackout and Megatron foiled him and opened Teletraan-1 to claim the Plasma Energy Chamber.
- In the Transformers; War for Cybertron, the Code Keys were replaced by the Omega Key.