Each Transformers Cybertron toy (excluding Minicons and Legends of Cybertron) come with a Cyber Key to unlock the toy's gimmick. These keys come with codes printed on them which uncloks additional character information on Hasbro's Transformers site.
Codes are listed by key mold. Differences from the standard key for the planet are listed (i.e. planet leaders)
Alternate codes apply to Hasbro's website only, and are not found on any keys.
Minicon keys use the Cybertron keys as a base, add a Minicon connector, and lack the molded faction sigil. The relevent faction symbol is added as a tampograph, and the border is painted in the faction color.
[Note: The Recon Mini-Con Team does not come with a key, nor was the code included. It is unknown if the Street Speed Mini-Con Team, Giant Planet Mini-Con Team, the Mini-Con 2-packs, or the retail Legends of Cybertron figures have their own "secret codes".]