True final boss: Nega-Mother Wisp
After clearing Terminal Velocity with all emeralds, wait until the credits are over, then go back into the game. You'll get a quick cut scene and the final stage will be accessible from the very top of the world map.
| Unlockable | How to Unlock |
|---|---|
| Nega-Mother Wisp | Collect all seven emeralds and clear Terminal Velocity |
