The characters, good and bad, that made "Secrets of Cybertron" what it was.
| Player Characters | Predacon Non-Player Characters |
|---|---|
| Swiftsting | |
| Stalker | Upgrade |
| Stahldrache | Epitaph |
| Thundershot/Thundercat | Sellsword |
| Eldred Cyrix | Oblivion |
| GuardianWing/Claw | Hardhead |
| Kitfox | Krakken |
| Modified Original Series NPCs | Angel |
| Shockwave | Nightbird |
| Elita One | |
| Laserbeak | |
| Grimlock | Maximal Non-Player Characters |
| Starscream | Scanner (Maximal Agents) |
Action figure packages and factiods from the world where "Secrets of Cybertron" is a real television show.
| Darkwave | Stahldrache |