Tektos is a stone giant on Erd.
Not only does Tektos serve as a character, but he also serves as a few key locations and even a dungeon.
In Magical Starsign
He is the sole survivor among nine stone giants that roamed Erd. He and Shalott are guardians of the Earth Millenium Gummy. When the player reaches his head, Tektos asks them to defeat Magnus Muzzleflash. After battle with Magnus he asks for the power to defeat Muzzleflash. After destroying Muzzleflash, he dies and asks the player to look after his soul: the Earth Millennium Gummy.