Lost Weekend

While fighting an E.V.O., Rex and Bobo get word of a party in the middle of a desert. White Knight call them to assign a mission to attend an underground party, the same party Rex got word of, in the Sonoran Desert.

Badlands

A large Providence convoy commanded by Six is transporting a case of unstable nanites through a desert.

Alliance

Rex is sent on a mission to fix the Bug Jar shield. Van Kleiss comes to recruit the vengeful E.V.O, No-Face in the Bug Jar. When Rex finds out that the Pack is there along with Circe, he follows them wearing a stealth suit.

Robobobo

After stopping another Rabbit E.V.O., Rex begins to suspect something is wrong with Bobo when he begins acting nice and even helping out around Providence.

Divide By Six

On his way home from fun and with a burger, Rex is ambushed by four humans, who are the 2nd-5th most dangerous men and women in the world.

Mixed Signals

While battling a starfish like E.V.O., Rex begins to have trance-like moments during the fight, with strange machines building from his body.

Outpost

White Knight is alerted and assumes that the Green Fist organization are selling E.V.O.s to Van Kleiss.

Haunted

Rex, being aware of Noah's girl troubles, arranges a double date for Noah by seeing a scary movie with Annie and Claire.

Moonlighting

Rex learns that two former Providence agents named Rombauer and Lansky are busting small E.V.O.s on Coney Island. During a battle with a Toad E.V.O., Rex goes to talk to the E.V.O. guys and helps battle the Toad E.V.O., which gets away.

Without a Paddle

Noah convinces Rex to enroll in his High School, Benjamin Franklin High, to compete in the Ping Pong tournament.

Night Falls

Rex and César go to a local village in Mexico to visit their adoptive grandmother, but she is hiding something.

Written In Sand

While in the desert, Rex ends up investigating a nanite-free zone inside a sandstorm and notices Van Kleiss, Biowulf and Skalamander going into it.

Hard Target

Breach goes to Hong Kong as her master has an important mission for her involving Quarry.

A Family Holiday

Dr. Brandon Moses develops a cure for incurables and Dr. Holiday shows complete interest. Six, Rex, and the White Knight grow suspicious.

Exposed

The news crew from Ultimate Exposure is given a free all pass to Providence.

Grounded

While nearly all Providence staff have left for field training exercises, Noah convinces Rex to throw a party.

Six Minus Six

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.

Lions and Lambs

Breach has her portal-creating abilities artificially enhanced by Van Kleiss, to the point where she can create golden-colored swirling portals through time itself.

Back in Black

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.

Crash and Burn

Rex is caught up in underground motorcycle racing.

Phantom of the Soap Opera

Noah lands a job at the TV studio where Rex's favorite show is filmed. After Rex stains Noah's uniform, he goes on a bunch of odd requests, such as chasing a size shifting mongoose, with everyone he meets thinking he's Noah.

Riddle of the Sphinx

The gang go to Cairo, Egypt, where Black Knight has teams investigate the Sphinx's secret tomb.

Double Vision

After losing his goggles during a fight with a huge EVO plant, Rex believes his goggles are one of a kind and tries to retrieve them.

Rock My World

Rex becomes a security guard of a band called the Trendbenders. He has to protect them from an obsessed fan named Sebastian, who was angry at the change in the band, and unbeknownst to Rex, has duplicating E.V.O. abilities.

Guy Vs. Guy

Rex plans a prank on Noah and asks Bobo for his help.

Black and White

Rex helps White Knight to infiltrate New Providence in order to discover the truth about what Black Knight and Caesar Salazar are truly planning for the future of E.V.O.-kind.

Deadzone

Rex and Noah transport an E.V.O. named Fitzy Feakins who has the ability to somehow interfere with Rex's powers. This causes problems for Rex when Black Knight is also after Fitzy.

Assault on Abysus

Rex races to Abysus with Circe in the hopes of beating Black Knight and Providence to a Master Nanite.

Heroes United Part 1

A one hour crossover episode between Ben 10: Ultimate Alien and Generator Rex in which Ben Tennyson accidentally travels to Rex Salazar's dimension.

Heroes United Part 2

A one hour crossover episode between Ben 10: Ultimate Alien and Generator Rex in which Ben Tennyson accidentally travels to Rex Salazar's dimension.

Remote Control

In Hong Kong, China, Rex learns that Quarry is using a remote control stolen from Providence Agents, turning his old friends, Tuck, Skwydd, and Cricket, against him once again.

A Brief History of Time

Rex saves Circe from Providence, but she is acting very strange. Rex and the others soon discover that the Circe they saved is actually a shape-shifting E.V.O. named John Scarecrow.

Mind Games

This episode tells Van Kleiss' story through time, since Breach sent him to ancient Egypt in the season two finale.

Hermanos

Rex learns that he's inherited a farm in Argentina, so he brings Noah, Claire, and Annie along to check it out.

Target: Consortium

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.

Enemies Mine

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

End Game part 1

Black Knight attacks the Providence Defect Team and steals the Meta-Nanites they had. Rex must risk losing his memory to defeat the Consortium.

End Game part 2

Black Knight attacks the Providence Defect Team and steals the Meta-Nanites they had. Rex must risk losing his memory to defeat the Consortium.