To defeat the Consortium and fix the world, Rex must risk losing his memories again, as he has to access the master control code within himself to shut down the Meta-Nanites.
Episode 19 of Generator Rex Season 3 is the series finale, titled . It concludes the two-part "Endgame" saga and the entire series. Episode Overview Title: " Endgame, Part 2 " Original Air Date: January 3, 2013 Generator Rex - Season 3Eps19
The episode picks up immediately after the Consortium successfully gains god-like powers by absorbing the Meta-Nanites. To defeat the Consortium and fix the world,
In the climax, Rex uses the master control to send out a worldwide "cure" command, effectively curing every E.V.O. (Exponentially Variegated Organism) on Earth. Generator Rex - Season 3Eps19