The BEST Episodes of Generator Rex
Every episode ever - ranked by fan votes!
Last Updated: Dec 30, 2019
Network: Cartoon Network
Five years prior to the start of the series, a massive explosion released nanites into the atmosphere, infecting every living thing on Earth. These nanites randomly activate inside their hosts, mutating the subject into a monster known as an E.V.O. (Exponentially Variegated Organism). These Evos are usually mindless creatures that are a danger to everything around them. To combat the Evo threat, the organization known as Providence was created to capture and cure them. Rex is a 15-year-old amnesiac teenager who, like everyone else, has been infected with nanites. However, unlike most Evos, Rex can control his nanites, allowing him to manifest a variety of powers and even cure other Evos of their mutations. Working with Providence under Agent Six, he helps stop the Evos as they appear. Working against Providence is Van Kleiss, an Evo with connections that are not only to the event which released the nanites, but to Rex as well.
#1 - Target: Consortium
Season 3 - Episode 16 - Aired Feb 24, 2012
The Jungle Cat E.V.O. returns and helps Rex and Agent Six attempt to find and take out Black Knight's bosses in the Consortium.
9.80 
#2 - A Brief History of Time
Season 3 - Episode 13 - Aired Feb 10, 2012
Van Kleiss' travels through time are recounted as he returns to the present with something on his tail.
9.75 
#3 - Remote Control
Season 3 - Episode 12 - Aired Feb 3, 2012
Quarry uses Providence collars to control EVOs.
9.50 
#4 - Endgame (1)
Season 3 - Episode 19 - Aired Mar 8, 2012
Black Knight attacks the Providence Defect Team and takes a Master Control Nanite out of Rex, allowing her to use Rex's powers.
9.50 
#5 - Rock My World
Season 3 - Episode 18 - Aired Mar 22, 2012
Rex becomes a security guard of a music band called the Trendbenders. He has to protect them from an obsessed fan who was angry at the change in the band.
9.50 
#6 - Heroes United (1)
Season 3 - Episode 3 - Aired Nov 25, 2011
A one hour crossover episode between Ben 10: Ultimate Alien and Generator Rex in which Ben Tennyson accidentally travels to Rex Salazar's dimension. After quarrels with each other, the two finally work together to stop a threat once created by Rex's brother, Caesar, the Alpha Nanite (Michael Emerson).
9.23 
#7 - Endgame (2)
Season 3 - Episode 20 - Aired Mar 15, 2012
Rex must risk losing his memory and resort to his last line of defense to defeat the Consortium. But will it be enough?
9.22 
#8 - Six Minus Six
Season 2 - Episode 18 - Aired Oct 21, 2011
An effort to restore Rex's memories results in Six losing most of his. Now having reverted to his earlier, less-refined self, Rex has to help Six find his way back from heartless mercenary to the mentor he has come to know.
9.17 
#9 - Hermanos
Season 3 - Episode 15 - Aired Feb 17, 2012
Rex inherits a farm in South America and invites his friends to explore it with him.
9.17 
#10 - Basic
Season 1 - Episode 17 - Aired Nov 5, 2010
Rex decides to attend "Providence Boot Camp" in an attempt to beat Noah. Once the boys arrive at the camp, they must dissect E.V.O.s, do sit-ups until they puke (literally), and even brush their teeth a specific way. When Rex and Noah fail a crash landing test and are ordered to do it over and over again until they do it correctly, they realize this may not be as easy as they thought. Things take a turn for the worse when a cadet, Kenwyn, who is angry at Rex for dropping her rank from #1, turns off the power restraint collar placed on E.V.O.s agents in training must battle. As a twist, the General sends her down instead of Rex since Rex fought it eariler in the episode. All the E.V.O.s, including Weaver, break loose and wreak havoc until Kenwyn works with Noah and a very helpful extra to distract the E.V.O.s so Rex can beat them. These four graduate from Basic Training and Noah and Rex are seen walking down the Stone Steps, betting money on who will make it to the bottom first.
9.09 
#11 - Robo Bobo
Season 2 - Episode 5 - Aired Mar 11, 2011
Rex discovers that Bobo has replaced himself with a robot duplicate.
9.00 
#12 - Guy vs. Guy
Season 3 - Episode 8 - Aired Jan 6, 2012
Rex plans a prank on Noah and ropes Bobo into his scheming.
9.00 
#13 - Mind Games
Season 3 - Episode 14 - Aired Feb 17, 2012
Circe behaves strangely after joining Rex and the gang at the Plant.
9.00 
#14 - Enemies Mine
Season 3 - Episode 17 - Aired Mar 2, 2012
Hunter Cain, Gatlocke, No Face, and Valve team up to take down Rex.
9.00 
#15 - Waste Land
Season 2 - Episode 2 - Aired Feb 11, 2011
On a mission to recover a set of nuclear reactor cores from a research ship, Rex and Six encounter an advanced civilization of marine E.V.O.s.
8.78 
#16 - Grounded
Season 2 - Episode 17 - Aired Oct 14, 2011
While the rest of Providence is off-site for training exercises, Rex is grounded. Noah convinces him to have a party, but can only deliver four hoodlums for guests. When an EVO intruder is found inside the base, it's up to the six of them to stop it.
8.75 
#17 - Lost Weekend
Season 2 - Episode 3 - Aired Feb 18, 2011
Providence Agent Kenwyn Jones and Rex are assigned an undercover mission to investigate an underground E.V.O. party. However, their unique way of getting things done soon causes problems and they must learn to work together.
8.71 
#18 - Divide by Six
Season 2 - Episode 6 - Aired Mar 18, 2011
Six asks for Rex's help to cure his old mentor, who's become an E.V.O.
8.64 
#19 - The Swarm
Season 1 - Episode 16 - Aired Oct 29, 2010
Rex faces off against a group of mutant locusts that feed on metal, leaving a path of destruction behind them. However, defeating them is not an easy task as. When they are attacked, the locusts keep dividing through binary fission. As the locusts rage toward China (which holds the Earth's largest metal concentration, Beijing), Providence pulls out all stops to halt their advance. Dr. Holiday comes to odds with White Knight, Six, and Rex as she strongly protests against their "attack first, ask questions later" policy. Finally, the team is forced to consult her for help when the increasing numbers of locusts destroy the Great Wall of China where Providence had made its stand. Eventually, Dr. Holiday synthesizes a concentrated version of a pheromone tag used by the locusts to mark prey, which she sent Rex to gather. While trying to gather the pheromone, Rex almost ends up dead. However, the nanite that Dr. Rylander injected into Rex saved his life, and the only sample left was in his underpants (which had red motorcycles on it). After everyone had a good laugh (Dr. Holiday gave Rex his underwear in front of everyone), Providence sprays it on the locusts, causing them to go berserk and attack (and devour) each other. Finally, Bobo, as revenge for Rex destroying more locusts than him, makes it public that "Providence's Secret Weapon, Underwear, Saves the Day". Rex leaves the Providence briefing room in anger as the story runs on TV, while the other Providence agents continue to laugh at his expense.
8.60 
#20 - Riddle of the Sphinx
Season 3 - Episode 6 - Aired Dec 16, 2011
The gang go to Egypt, where strange EVO activity surfaces.
8.60 
#21 - Back in Black
Season 3 - Episode 1 - Aired Nov 10, 2011
Six months into the future, Rex learns that Black Knight became the head of Providence after White Knight went against the orders of his superiors the Directorate. During this time-skip, Providence has adopted a new method of dealing with captured E.V.O.S. Instead of researching the incurable creatures, they now use a machine to brainwash them into servitude.
8.43 
#22 - Written in Sand
Season 2 - Episode 12 - Aired Apr 29, 2011
While investigating a nanite-free sandstorm, both Rex and Van Kleiss become trapped underground, with their nanites slowly being destroyed. The two enemies must work together in order to survive.
8.43 
#23 - Night Falls
Season 2 - Episode 13 - Aired Sep 16, 2011
Caesar takes Rex to visit a family friend back in Mexico where they are met with cold suspicion and a dark secret.
8.43 
#24 - Lions and Lambs
Season 2 - Episode 19 - Aired Nov 4, 2011
Van Kleiss has found a way to enhance Breach's powers so she can now open portals in time. To stop this dangerous threat, Rex must attempt to lure her over to the good side.
8.43 
#25 - Rampage
Season 2 - Episode 1 - Aired Feb 4, 2011
Van Kleiss turns Noah into an EVO! Can Rex cure his best friend in time?
8.40