The Thunder Spirit (雷の精 Kaminari no sei) is an enemy-only combat magical class that is exclusive to Fire Emblem: Radiant Dawn. One of three types of spirits summoned by Ashera, the Thunder Spirit, like its name suggests, is a spirit that embodies the element of Thunder, specialising in the usage of Thunder Magic for its attacks.
Thunder Spirits, alongside its other elemental counterparts, possess the largest Movement range of any unit and the ability to teleport around the battlefield. They are regarded as the weakest of all three types of spirit, as Thunder Magic has lower Might and Accuracy than Fire or Wind.
Although Thunder Spirits are Thunder-based, Wyvern-mounted units and Dragon tribe Laguz take no bonus damage from their attacks.