The BEST Episodes of Generator Rex

Every episode ever - ranked by fan votes!

Last Updated: Mar 18, 2020

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.

Heroes United (2)

#1 - Heroes United (2)

Season 3 - Episode 4 - 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).

star 9.80
5 votes
Writers: Man of Action
Target: Consortium

#2 - 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.

star 9.80
5 votes
Directors: Chris Graham
Writers: Alexx Van Dyne
A Brief History of Time

#3 - 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.

star 9.75
4 votes
Directors: Chris Graham
Writers: Paul Giacoppo
Remote Control

#4 - Remote Control

Season 3 - Episode 12 - Aired Feb 3, 2012

Quarry uses Providence collars to control EVOs.

star 9.50
4 votes
Endgame (1)

#5 - 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.

star 9.50
8 votes
Directors: John Fang
Writers: Rob Hoegee
Rock My World

#6 - 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.

star 9.50
4 votes
Directors: Kenji Ono
Writers: Alexx Van Dyne
Heroes United (1)

#7 - 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).

star 9.23
39 votes
Writers: Man of Action
Endgame (2)

#8 - 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?

star 9.22
9 votes
Directors: Chris Graham
Writers: Rob Hoegee
Six Minus Six

#9 - 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.

star 9.17
6 votes
Directors: Chris Graham
Writers: Alexx Van Dyne
Hermanos

#10 - 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.

star 9.17
6 votes
Robo Bobo

#11 - Robo Bobo

Season 2 - Episode 5 - Aired Mar 11, 2011

Rex discovers that Bobo has replaced himself with a robot duplicate.

star 9.00
8 votes
Directors: Seung-Hyun Oh
Writers: Rob Hoegee
Mixed Signals

#12 - Mixed Signals

Season 2 - Episode 7 - Aired Mar 25, 2011

Rex is kidnapped from Providence by a man who claims to be his older brother, Cesar Salazar.

star 9.00
9 votes
Directors: Chris Graham
Writers: Rob Hoegee
Guy vs. Guy

#13 - Guy vs. Guy

Season 3 - Episode 8 - Aired Jan 6, 2012

Rex plans a prank on Noah and ropes Bobo into his scheming.

star 9.00
4 votes
Directors: Seung-Hyun Oh
Writers: Jake Black
Assault on Abysus

#14 - Assault on Abysus

Season 3 - Episode 11 - Aired Jan 27, 2012

Rex races to Abysus in hopes of beating the Black Knight and Providence there.

star 9.00
5 votes
Directors: Seung-Hyun Oh
Writers: James Felder
Mind Games

#15 - Mind Games

Season 3 - Episode 14 - Aired Feb 17, 2012

Circe behaves strangely after joining Rex and the gang at the Plant.

star 9.00
4 votes
Enemies Mine

#16 - Enemies Mine

Season 3 - Episode 17 - Aired Mar 2, 2012

Hunter Cain, Gatlocke, No Face, and Valve team up to take down Rex.

star 9.00
4 votes
Directors: Kenji Ono
Writers: Eugene Son
Alliance

#17 - Alliance

Season 2 - Episode 4 - Aired Mar 4, 2011

Rex and Bobo are sent to fix a failing shield around the Bug Jar. Unfortunately, Van Kleiss and the Pack, along with Circe, arrive in order to forge an alliance with the inhabitants of the Bug Jar and their vengeful leader, NoFace.

star 8.86
7 votes
Directors: Chris Graham
Writers: Paul Giacoppo
A Family Holiday

#18 - A Family Holiday

Season 2 - Episode 15 - Aired Sep 30, 2011

Doctor Holiday goes to disastrous lengths to get her younger sister, Beverly, cured by a mysterious man named Dr. Brandon Moses, who says that he has found a cure for incurable E.V.O.s. However, there may be more to his "cure" than meets the eye.

star 8.86
7 votes
Writers: Rob Hoegee
Basic

#19 - 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.

star 8.83
12 votes
Directors: Rick Morales
Writers:
Waste Land

#20 - 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.

star 8.80
10 votes
Directors: Chris Graham
Writers: Rob Hoegee
Grounded

#21 - 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.

star 8.75
4 votes
Directors: Seung-Hyun Oh
Writers: James Felder
Promises, Promises

#22 - Promises, Promises

Season 1 - Episode 19 - Aired Nov 19, 2010

It's Rex's birthday (more accurately the anniversary of when he first joined Providence) and Six has flashbacks about how Rex first joined Providence. Back when Providence was forming, captured E.V.O.s were detained only until they were disassembled on a molecular level for study. However, Dr. Holiday, an assistant at the time, believes that studying how nanites cause mutations may one day allow for an option other than kill or contain: cure. One day, Six and his partner White Knight were called to Mexico to deal with a rampaging bio-mechanical E.V.O. only for the E.V.O. to collapse after being battered enough and revealed to be fourteen-year-old Rex. Rex cures a second E.V.O. right in front of Six's eyes and he brings him back to Dr. Holiday to be studied. Despite Rex being her all and more of her wildest dreams rolled into one, Six insists that they keep him under wraps for now. However, White Knight finds Rex and brings him to the head of E.V.O. Studies, Dr. Fell, in hopes that disassembling him will reveal how his curing powers work and how to cure the entire planet all in one shot. However, Six believes that it is too big of a risk to sacrifice what they know will work for something that might work. With assistance from Bobo, a recently captured E.V.O. who was holding the Kremlin hostage for caviar before his capture, Dr. Holiday is able to save Rex. However, White Knight and Six's fight had caused the E.V.O. disassembly machine to overload and destroy all the nanites in White Knight's body, but Rex is able to save White Knight's life by turning off the machine with his powers, in the process, bleaching White Knights skin and hair. Rex's curing abilities has given Providence much needed funding and White Knight is made head of Providence for his zero nanite count. Back in the present, Six gives Rex a Tantō inscribed with the symbol of loyalty for his birthday and states that he has its twin (which was given to him for his birthday the day he found Rex) and sta

star 8.73
11 votes
Directors: Sam Montes
Writers:
Lost Weekend

#23 - 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.

star 8.71
7 votes
Directors: Seung-Hyun Oh
Writers: Rob Hoegee
Divide by Six

#24 - 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.

star 8.64
11 votes
Directors: Rick Morales
Writers: Rob Hoegee
Riddle of the Sphinx

#25 - Riddle of the Sphinx

Season 3 - Episode 6 - Aired Dec 16, 2011

The gang go to Egypt, where strange EVO activity surfaces.

star 8.60
5 votes
Directors: Seung-Hyun Oh
Writers: James Felder