Generator Rex



Thoughtful sci-fi cartoon with monsters is best for tweens.
Parents recommendPopular with kids

What parents need to know

Positive messages

The show has good messages for tweens about cooperation, respect for differences, and positive self-image. Rex has a tough time defining himself without a memory of his past, but his friends help him to balance his personal and professional lives.

Positive role models

Rex struggles to balance the opposing forces in his life: first, his desire to uncover the mysteries of his past and be a normal teen, and second, his sense of responsibility to help Providence rid the world of evil E.V.O.s. At times he lets his ego and personal motivations lead him into trouble, but when push comes to shove, he always makes the right choice.


The Providence team uses guns, swords, knives, and hand-to-hand violence against the monstrous E.V.O.s, but their goal is always to disarm the nanites’ control over the human victims they’ve enslaved rather than to kill. Lasers and massive explosions sometimes cause extensive damage to buildings, but no people are shown injured by them. 


Rex often flirts with his attractive caretaker, Doctor Holiday, making insinuating comments like, “My bios spike every time I see you.” Leggy female characters are shown in skimpy bikinis.


Occasional use of “butt,” but nothing stronger. 

Not applicable
Drinking, drugs, & smoking
Not applicable

Parents Need to Know

Parents need to know that this sci-fi/adventure cartoon is better suited for tweens than it is for kids due to a good deal of violence (guns, knives, and large explosions, for instance) with little real-world consequence and plenty of monsters of all shapes and sizes. What’s more, the intricacies of Rex’s struggles with his own identity and good decision-making are too weighty for kids to grasp. That said, the show is a rare find for tweens, blending a mature storyline about a teen’s inner battle between his sense of responsibility and his very different personal desires with an enticing plot of mystery and adventure.

What's the story?

In a recent global accident, Earth was infected by microscopic machines called nanites, which link with humans’ DNA and can turn their hosts into dangerous monsters. Rex (voiced by Daryl Sabara) was no exception, but inexplicably this remarkable 15-year-old amnesiac is able to control his nanites and transform his body at will, making him the secret weapon in the Providence agency’s battle against the mutant creatures, called Exponentially Variegated Organisms, or E.V.O.s for short. Together with his Providence team – Dr. Holiday (Grey DeLisle), Agent Six (Wally Kurth), and his chimpanzee friend, Bobo Haha (John DiMaggio) – and “regular” pal, Noah (Fred Savage), Rex must stare down evil in all forms while he searches for the truth to his past.

Is it any good?


If your tweens (especially boys) think they’re too old for cartoons, GENERATOR REX is up to the challenge of changing their minds. This enjoyable show is full of adventure in an ongoing battle of good vs. evil, and the subplot surrounding Rex’s questions about his past is a dangling-carrot mystery that will retain the interest of this more mature audience. True, much of the cartoon is doused in violent exchanges between Rex and a host of mutants, but even here the show’s thoughtfulness is apparent, as rather than killing the monsters, Rex uses his powers to restore their humanity.

This content is all well and good for the tween set, but it’s the very stuff that makes this an iffy choice for younger kids. An ever-changing cast of monsters, recurring villains with truly evil intentions, inner struggles with emotion, and an uncertain self-image may raise more questions than answers for youngsters, so better save this one until the littlest ones have gone to bed.

Families can talk about...

  • Families can discuss responsibility. Can you relate to Rex’s frustration over having responsibility thrust upon him? How does he cope with the pressure? What responsibilities weigh heaviest on you? What coping techniques do you use to manage? 

  • Parents and tweens can talk about violence on TV. Tweens: What did you think about the violence in this show? Would you say there was too much of it, or was it OK? Did you find it realistic? Do you think it was intended to be realistic? What standards do you think should exist for violence on TV?   

  • Tweens: How would you define “self-image?” How is your self-image influenced by people around you? Do you fall victim to the media’s messages about who you should be? If so, which ones affect you most? Why is it sometimes difficult to have a strong self-image? 

TV details

This review of Generator Rex was written by

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Learning ratings

  • Best: Really engaging; great learning approach.
  • Very Good: Engaging; good learning approach.
  • Good: Pretty engaging; good learning approach.
  • Fair: Somewhat engaging; OK learning approach.
  • Not for Learning: Not recommended for learning.
  • Not for Kids: Not age-appropriate for kids; not recommended for learning.

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Kid, 9 years old June 14, 2010


to make a long story short. there is violence involving monsters that tear stuff apart (some kind of scary). Monsters are usaullly cured or left alone, some die from time to time. I like how it is not pointless, like Ben 10. The monsters are treted LIKE people(well they pretty much are people). i strongly suggest watching it.
What other families should know
Too much violence
Great messages
Teen, 16 years old Written bysomerandomguy March 21, 2012

A Very Impressive Show Indeed!

I really enjoyed the first two episodes and suddenly I was hooked! It has an amazing plot to it. But it may not be right for kids, yes it may have good role models such as Rex or Agent Six but the E.V.O.S. that Rex fights may be a bit too scary for younger kids. There is quite a lot of action in each episode. Such as guns, bombs and swords.This isn't really for kids, more for tweens and teens. There could sometimes be sexual scenes such as episode 3, "Beyond the Sea", where there are girls in bikini's. Rex also tries to flirt with a girl at the beach and at the end of the episode he almost kisses her, but an E.V.O. stops them. In most of the episodes Rex flirts with Doctor Holiday, a person that takes care of him, even though she is a lot older than him.
What other families should know
Great messages
Great role models
Too much violence
Too much sex
Teen, 13 years old Written byKassidyC April 15, 2013

Pleasantly Surprised

At first I just expected another gross out, unfunny, undeep, show incorrectly aimed at boys. But I was shocked when I found out it was actually a well written show. Of course, it's not the deepest show in the worlds. But for a scifi show on Cartoon Network aimed at children, the creators of the show did a very nice job. I give it a rating of 10 years old but (as a teen myself) it's something kids a few years older might still enjoy. It was one of the few non-immature shows airing on Cartoon Network at the time but was sadly cancelled.
What other families should know
Great role models
Too much violence
Too much sex


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