Vrak Is Back (1) - [s21e16]

: He abducts the Silver Ranger , Orion, and begins draining his alien life force to power his Gosei Orbs and disable the Rangers' Legendary powers .

: 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 [S21E16] Vrak is Back (1)

In a classic Vrak move, he tricks the Rangers into doing his dirty work. He sends his henchman, , to fight the Rangers. When the Rangers use their Sea Brothers power to destroy him, Vrak reveals that Tresnag was a "cipher" designed to absorb their attack energy. That very energy is what powers the second giant drill, leaving the Rangers in a state of despair as they realize they’ve helped Vrak get one step closer to checkmate . : He abducts the Silver Ranger , Orion,

: Vrak reveals he has been holding Robo Knight captive and has reprogrammed him into Dark Robo Knight. He sends his henchman, , to fight the Rangers

The most emotional blow for the team is the return of Robo Knight , who has been MIA since the Megaforce finale.