Thunder may refer to any of the following.
- Thunder: A Type.
- Thunder: An Alignment.
- Thunder: A monster Faction in the Capsule Monsters Game.
- Thunder: A character from Yu-Gi-Oh! GX.
- Thunder: A card version of the aforementioned character.
- Raimei: A card called "Thunder" in the Japanese version.
- hunder: An archetype, called "Thunder" in the Japanese version.
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