The BEST Episodes of Generator Rex

Every episode ever - ranked by fan votes!

Last Updated: Jan 13, 2021

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 10.00
205 votes
Writers: Man of Action
Endgame (2)

#2 - 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 9.95
208 votes
Directors: Chris Graham
Writers: Rob Hoegee
Endgame (1)

#3 - 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 9.95
209 votes
Directors: John Fang
Writers: Rob Hoegee
Target: Consortium

#4 - 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 9.95
182 votes
Directors: Chris Graham
Writers: Alexx Van Dyne
Remote Control

#5 - Remote Control

Season 3 - Episode 12 - Aired Feb 3, 2012

Quarry uses Providence collars to control EVOs.

star 9.94
188 votes
Hermanos

#6 - 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 9.94
199 votes
Assault on Abysus

#7 - 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 9.92
189 votes
Directors: Seung-Hyun Oh
Writers: James Felder
A Brief History of Time

#8 - 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 9.92
200 votes
Directors: Chris Graham
Writers: Paul Giacoppo
Lions and Lambs

#9 - 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.

star 9.91
202 votes
Directors: Seung-Hyun Oh
Writers: Rob Hoegee
Riddle of the Sphinx

#10 - Riddle of the Sphinx

Season 3 - Episode 6 - Aired Dec 16, 2011

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

star 9.90
189 votes
Directors: Seung-Hyun Oh
Writers: James Felder
Enemies Mine

#11 - Enemies Mine

Season 3 - Episode 17 - Aired Mar 2, 2012

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

star 9.90
170 votes
Directors: Kenji Ono
Writers: Eugene Son
Exposed

#12 - Exposed

Season 2 - Episode 16 - Aired Oct 7, 2011

A news crew is given an all-access pass to Providence, and Rex goes a little too far in an effort to get more camera time.

star 9.89
177 votes
Directors: Chris Graham
Writers: Charlotte Fullerton
Phantom of the Soap Opera

#13 - Phantom of the Soap Opera

Season 3 - Episode 5 - Aired Dec 9, 2011

Noah lands a job at the TV studio where Rex's favorite show is filmed.

star 9.89
171 votes
Directors: Kenji Ono
Writers: Scott Sonneborn
Haunted

#14 - Haunted

Season 2 - Episode 9 - Aired Apr 8, 2011

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

star 9.89
200 votes
Directors: Rick Morales
Writers: Rob Hoegee
Guy vs. Guy

#15 - Guy vs. Guy

Season 3 - Episode 8 - Aired Jan 6, 2012

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

star 9.88
126 votes
Directors: Seung-Hyun Oh
Writers: Jake Black
A Family Holiday

#16 - 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 9.88
181 votes
Writers: Rob Hoegee
Black and White

#17 - Black and White

Season 3 - Episode 9 - Aired Jan 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.

star 9.88
187 votes
Directors: Chris Graham
Writers: Man of Action
Mind Games

#18 - Mind Games

Season 3 - Episode 14 - Aired Feb 17, 2012

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

star 9.87
132 votes
Written in Sand

#19 - 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.

star 9.87
168 votes
Directors: Chris Graham
Writers: Rob Hoegee
Six Minus Six

#20 - 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 9.87
143 votes
Directors: Chris Graham
Writers: Alexx Van Dyne
Alliance

#21 - 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 9.85
131 votes
Directors: Chris Graham
Writers: Paul Giacoppo
Heroes United (1)

#22 - 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 9.85
232 votes
Writers: Man of Action
Night Falls

#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.

star 9.85
137 votes
Directors: Rick Morales
Writers: Amy Wolfram
Rock My World

#24 - 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 9.84
94 votes
Directors: Kenji Ono
Writers: Alexx Van Dyne
Divide by Six

#25 - 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 9.82
122 votes
Directors: Rick Morales
Writers: Rob Hoegee