The Impactors

After Karin's death, the  Impactors  (インパクター Inpakutā? )  from Planet Impactor are entrusted with the mission to destroy Earth anyway. The Impactors' culture is centered on honor and combat, using cards to switch between human form and fighting form. In the first part, Lucia and Radia were sent to use a meteor to wipe out Shinkujira Island, in order to destroy the final ChouSeiShin Leviathan before going after the other ChouSeiShin. However, the meteor was hindered by Cloud Dragon and the fragments unearthed Leviathan instead. After the Water Tribe reveal themselves and awaken Levithan to kill Radia, Logia reveals himself. But after the plan with Guntras fails, the Impactors are ordered by the Warp Monarch to cease their attack on Earth.

Three of the Impactors are-
 * 1) Impactor Logia
 * 2) Impactor Lucia
 * 3) Impactor Radia