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* ActingForTwo: George Lopez plays several roles in this film. As well as the obvious Mr. Electricidad and Mr. Electric roles, his voice was deepened for Tobor and pitched up for the Ice King.
* {{Anvilicious}}: All of the adults are intentionally made to come off as this.
* EarWorm: "Close your eyes, shut your mouth, dream a dream to get us out, ''dream dream dream dream dream dream''..."
* FridgeBrilliance: The [[ConspicuousCG Conspicuous CG]] is one of those tropes that breaks the illusion, and therefore the viewer has no suspension of disbelief... but that's the point; you're not supposed to think Planet Drool is real. The audience is just like the rest of the adults in the film that think Max's dreams are ultimately fake. It's not until [[spoiler:Sharkboy, Lavagirl, and Mr. Electric come to Earth at the end that their existence is validated]].
** Lavagirl's representation in the real world [[spoiler:(besides Max's mother)]] is ''a '''lava''' lamp''.
* IronWoobie: Lavagirl.
* JerkassWoobie: Linus/Minus. He only wants to destroy the dream world because his dreams are broken, which explains his negative attitude.
* {{Narm}}: Several instances, mostly the ridiculous faces Mr. Electric keeps making. Though it could be [[JustifiedTrope justified]] as his faces seem to be on purpose.
** NarmCharm: And yet to some, the cheesiness is part of what makes the movie entertaining.
** Also, Max's parents' horrendous acting when admitting their love for each other in the climax of the movie. Dear ''God''...
* RetroactiveRecognition: Is that '''[[Film/{{Twilight}} Jacob Black]]''' as Sharkboy?!
** Furthermore, is that '''[[Series/PrettyLittleLiars Alison DiLaurentis]]''' as Marissa?!
* SoBadItsGood: To a fair amount of viewers.
** The movie's story did come from the director's son, Racer, who was fairly young when it was written. A lot of viewers tend to forget that.
* TearJerker: Max crying over [[spoiler:Sharkboy and Lavagirl, who appear to be dead]].
* ToyShip: In-universe examples: Max with Marissa and Lavagirl with Sharkboy.
* TheWoobie: Max. He's a bully magnet and just wants to be left alone to dream in peace. Interestingly inverted at the end when his own invention makes him realize that he's only been dreaming for himself and didn't care enough about others, implying that everyone else needed his help and The Woobie was actually all of ''them.''
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