The Temple Guardians is one of the non-playable characters in LEGO Dimensions 2: The Rise of Enoch. He is the cosmic clone of Darth Sidious from the Star Wars franchise.
This type of guardian originated when the Foundation Entities finished constructing the Temple of Foundation and hiding the Foundation Gauntlet inside it's pedestal. Their leader Thatch told them his father's promise of keeping the gauntlet safe and secret.
Since the entities were gone, they fell asleep under their spell.
Grand Interdimensional War
By the time Grand Emperor Enoch obtains the gauntlet from it's pedestal, they awake and try to attack him but he cursed some of them to become his minions while most of them were cursed by his dark magic under the same sleeping spell the entities cast upon them.
They awake again attacking Andy and the Iron Resistance. They were defeated and tells them that Enoch stole the temple's most precious element.