|This article is about a/an changer in Kyukyu Sentai GoGoFive.|
|Used by: Zeek|
Zeek Crystal (ジーク結晶 Jīku kesshō?): The transformation device of Beast-Demon Hunter Zeek and later Zeek-Jeanne that Zeek brought with him when he traveled to Earth after Demon King Golomois. To henshin, the user presents the crystal with the transformation call of: Zeek Tector! (ジークテクター Jīku Tekutā?).