The most emotional blow for the team is the return of Robo Knight , who has been MIA since the Megaforce finale.
: Vrak reveals his master plan to plant three massive drills in the land and sea to reach the Earth's core and turn the planet into dust. [S21E16] Vrak is Back (1)
: Forced to fight their former ally, the Rangers—particularly Noah —are devastated to see the guardian of the environment now acting as the "Destroyer of the Earth". The Ultimate Deception The most emotional blow for the team is
: He abducts the Silver Ranger , Orion, and begins draining his alien life force to power his Gosei Orbs and disable the Rangers' Legendary powers . [S21E16] Vrak is Back (1)