Quantum Guardian

Plank,the Quantum Guardian.

Legends of Plank:
Plank lives outside of universes,in the void.Those orbs are basically universes!Plank keeps them in check and takes care of them.When a universe gets old,it will kill the universe.Plank is like a game designer of a particular franchise,creating different games(universe) by programing them(some binary is seen),and people of different sorts dive in to play.When it decides to shut down the game,a universe is destroyed.That's why different universes have different physics.Plank's the one who created those rules and made sure there are no problems lol.

Currently,this guardian is still a myth until it is discovered.No one really knows!