Generator Rex

The BEST episodes of Generator Rex

Every episode of Generator Rex ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Generator Rex!

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.

Last Updated: 9/24/2022Network:Cartoon Network
Share:
Promises, Promises
star
10.99
297 votes

#1 - Promises, Promises

Season 1 - Episode 19 - Aired 11/19/2010

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

Directors: Sam Montes
Watch Now:Amazon
Endgame (1)
star
10.79
614 votes

#2 - Endgame (1)

Season 3 - Episode 19 - Aired 3/8/2012

Black Knight attacks the Providence Defect Team and takes a Master Control Nanite out of Rex, allowing her to use Rex's powers.

Directors: John Fang
Writer: Rob Hoegee
Lions and Lambs
star
10.64
516 votes

#3 - Lions and Lambs

Season 2 - Episode 19 - Aired 11/4/2011

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.

Directors: Seung-Hyun Oh
Writer: Rob Hoegee
Watch Now:Amazon
Assault on Abysus
star
10.52
390 votes

#4 - Assault on Abysus

Season 3 - Episode 11 - Aired 1/27/2012

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

Directors: Seung-Hyun Oh
Writer: James Felder
Watch Now:AmazoniTunes
A Brief History of Time
star
10.52
564 votes

#5 - A Brief History of Time

Season 3 - Episode 13 - Aired 2/10/2012

Van Kleiss' travels through time are recounted as he returns to the present with something on his tail.

Directors: Chris Graham
Watch Now:Amazon
Target: Consortium
star
10.49
534 votes

#6 - Target: Consortium

Season 3 - Episode 16 - Aired 2/24/2012

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.

Directors: Chris Graham
Watch Now:Amazon
Divide by Six
star
10.44
178 votes

#7 - Divide by Six

Season 2 - Episode 6 - Aired 3/18/2011

Six asks for Rex's help to cure his old mentor, who's become an E.V.O.

Directors: Rick Morales
Writer: Rob Hoegee
Watch Now:AmazoniTunes
Heroes United (2)
star
10.26
566 votes

#8 - Heroes United (2)

Season 3 - Episode 4 - Aired 11/25/2011

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).

Watch Now:AmazoniTunes
Enemies Mine
star
10.25
416 votes

#9 - Enemies Mine

Season 3 - Episode 17 - Aired 3/2/2012

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

Directors: Kenji Ono
Writer: Eugene Son
Watch Now:Amazon
Endgame (2)
star
10.22
532 votes

#10 - Endgame (2)

Season 3 - Episode 20 - Aired 3/15/2012

Rex must risk losing his memory and resort to his last line of defense to defeat the Consortium. But will it be enough?

Directors: Chris Graham
Writer: Rob Hoegee
Hermanos
star
10.16
481 votes

#11 - Hermanos

Season 3 - Episode 15 - Aired 2/17/2012

Rex inherits a farm in South America and invites his friends to explore it with him.

Watch Now:Amazon
Black and White
star
10.14
336 votes

#12 - Black and White

Season 3 - Episode 9 - Aired 1/13/2012

After hearing rumors about what Black Knight is really up to within Providence HQ; Rex, Six, Holiday and White Knight break in to try and confirm the rumor. If true, the Planet could once again come under threat. Caesar reveals a secret about the original outbreak.

Directors: Chris Graham
Watch Now:AmazoniTunes
A Family Holiday
star
10.13
284 votes

#13 - A Family Holiday

Season 2 - Episode 15 - Aired 9/30/2011

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.

Writer: Rob Hoegee
Watch Now:Amazon
Haunted
star
10.12
289 votes

#14 - Haunted

Season 2 - Episode 9 - Aired 4/8/2011

A ghostly cat-like E.V.O. interrupts Rex and Noah's double-date with Claire and Annie at a haunted hotel.

Directors: Rick Morales
Writer: Rob Hoegee
Watch Now:AmazoniTunes
Back in Black
star
10.12
243 votes

#15 - Back in Black

Season 3 - Episode 1 - Aired 11/10/2011

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.

Watch Now:AmazoniTunes
Remote Control
star
10.10
220 votes

#16 - Remote Control

Season 3 - Episode 12 - Aired 2/3/2012

Quarry uses Providence collars to control EVOs.

Writer: Ken Pontac
Watch Now:AmazoniTunes
Written in Sand
star
10.09
297 votes

#17 - Written in Sand

Season 2 - Episode 12 - Aired 4/29/2011

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.

Directors: Chris Graham
Writer: Rob Hoegee
Watch Now:AmazoniTunes
Mixed Signals
star
10.07
149 votes

#18 - Mixed Signals

Season 2 - Episode 7 - Aired 3/25/2011

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

Directors: Chris Graham
Writer: Rob Hoegee
Watch Now:AmazoniTunes
Hard Target
star
10.07
165 votes

#19 - Hard Target

Season 2 - Episode 14 - Aired 9/23/2011

While delivering Chinese food to Providence, Rex is attacked by Breach. She later tells Rex that Van Kleiss has a very important mission for her involving an old friend of Rex's. After she suddenly leaves through a portal to Hong Kong, Rex follows her, mistakenly thinking that Breach is after Circe. Rex eventually discovers that Breach is after his old boss: Quarry.

Directors: Seung-Hyun Oh
Watch Now:Amazon
Alliance
star
10.06
239 votes

#20 - Alliance

Season 2 - Episode 4 - Aired 3/4/2011

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.

Directors: Chris Graham
Watch Now:AmazoniTunes
Mind Games
star
10.05
237 votes

#21 - Mind Games

Season 3 - Episode 14 - Aired 2/17/2012

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

Watch Now:Amazon
Heroes United (1)
star
10.01
406 votes

#22 - Heroes United (1)

Season 3 - Episode 3 - Aired 11/25/2011

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).

Watch Now:AmazoniTunes
Six Minus Six
star
10.00
237 votes

#23 - Six Minus Six

Season 2 - Episode 18 - Aired 10/21/2011

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.

Directors: Chris Graham
Watch Now:Amazon
Riddle of the Sphinx
star
10.00
338 votes

#24 - Riddle of the Sphinx

Season 3 - Episode 6 - Aired 12/16/2011

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

Directors: Seung-Hyun Oh
Writer: James Felder
Watch Now:AmazoniTunes
Guy vs. Guy
star
9.98
148 votes

#25 - Guy vs. Guy

Season 3 - Episode 8 - Aired 1/6/2012

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

Directors: Seung-Hyun Oh
Writer: Jake Black
Watch Now:AmazoniTunes

Want to see the rest of the rankings?

Episode Ninja is a small business run by one person.
Pro memberships help fund servers and new feature development!