Thunder could mean:
- Day of Thunder: Final battle against Fu Leng.
- Dragon of Thunder: A representation of the courage and spirit of the mortal race of man.
- Helm of Thunder: A nemuranai gift of the Dragon of Thunder.
- Oracle of Thunder: The representative of the Dragon of Thunder.
- Seven Thunders: The warriors who fought Fu Leng on the Day of Thunder and the Second Day of Thunder.
- Thunder (element): The element of Thunder, the element of heroes and power.