''Galidor: Defenders of the Outer Dimension'' was a science fiction television show created by tween television writer Tom Lynch, produced by [=CineGroup=], aired by {{Fox Kids}} (the last show to premiere on that programming block before it was replaced by Fox Box) and later ABC Family in 2002, and merchandised with its own {{Lego}} action figure line in exchange for Lego partially funding the series.

The show follows Nick Bluetooth, who awakens on his birthday to find a floating tablet that, with the help of his friend Allegra Zane, leads to a egg-shaped transport that sends them into the Outer Dimension, a series of alternate universes where the evil Gorm seeks to take over. Nick learns he's the one destined to free the realms from Gorm's tyranny, and he has a special power called Glinching that lets him swap body parts with the various denizens of the realms. Allying with a cyborg, a frog-man, and a yeti midget, they travel in the "Egg" spacecraft to find the MacGuffin of key fragments that will lead them to the lost city of Galidor, which will provide them the means to save the Outer Dimension, and maybe even solve the mystery of Nick's DisappearedDad, who it seems had a history with this strange realm.

The series had a short, two-season run of 26 episodes, dying just seven months after its debut, due to a combination the death of the Fox Kids block itself, and the infamous Lego toy line (which was composed of action figure-like pieces that couldn't be used with other Lego brands) being a huge critical and commercial flop. The series quickly faded into obscurity afterwards, and it has received no official release on DVD or Blu-Ray.

Three video games were also made as tie-ins for the series: a Flash game for the Fox Kids website, and games for the GameBoyAdvance and PC. A comic book tie-in was also released.

!!Tropes used in this TV series and toy line:
* ActionGirl: Allegra Zane
* AppliedPhlebotinum: Glinch Energy, responsible for Nick Bluetooth's [[ShapeshifterWeapon Glinching ability]]. Individuals with high concentrations of it can shapeshift parts of their body at will, whereas even those of lesser concentrations can swap out body parts.
* AliensSpeakingEnglish: Not really explained or touched on. Possibly handwaved, depending on how much influence TheStranger had on the Outer Dimension. It's remotely possible that English caught on because he introduced it.
* AnotherDimension: Most of the series takes place in The Outer Dimension.
* AwesomeMcCoolname: Nick Bluetooth!
* BigBad: Gorm.
* BiggerOnTheInside: The Egg, the space ship used for interdimensional travel used by the heroes.
* CatapultNightmare: Nicholas, at the beginning of the PilotEpisode.
* ClipShow: The episode just before the finale.
* ClothesMakeTheSuperman: Gorm.
* ColdFlames: Nepol's species use these for fire, using them to cool their bodies in the same way that humans warm theirs.
* CutShort: The series ended on [[spoiler: Gorm vowing revenge on Nick Bluetooth and revealing that his father was alive all along.]]
* DisappearedDad: Nick Bluetooth's father.
* FiveManBand:
** TheHero - Nick Bluetooth
** TheLancer - Nepol
** TheSmartGuy - Jens
** TheBigGuy - Euripides
** TheChick - Allegra
* GottaCatchEmAll: The plot behind the first season involved finding the pieces to the key to Galidor by locating them in realms in the Outer Dimension.
* InvoluntaryShapeshifting: Nick's special ability allows him to exchange his limbs with other beings, an ability which works properly a very small percentage of the time.
* KidHero: Nick Bluetooth.
* LeftHanging:
* MadScientist: The Stranger.
* MarsNeedsWater: The Aquarts feed upon the moisture of other living beings due to the extreme drought on their home world.
* MerchandiseDriven: The show is mostly remembered for the infamous series of LEGO figures made to promote it, and was helped by UsefulNotes/McDonalds Happy Meal toys and and video game tie-in for the PC, GameBoyAdvance and a flash game on the Fox Kids website. Certainly could give the impression that the show was running on toy promotion, and considering the factor of the toy line's disastrous reception, might not be inconceivable.
* MultiversalConqueror: Gorm, conqueror of a thousand realms.
* ProudScholarRaceGuy: Euripides.
* ProudWarriorRaceGuy: Nepol.
* RealityWarpingIsNotAToy: One of the episodes deal with Nick Bluetooth getting a hold of Gorm's power suit.
* ShapeshifterWeapon: Nick Bluetooth's glinching ability when properly used.
* ShoutOut: The spaceship that Nick Bluetooth finds is practically a [[Series/DoctorWho TARDIS]]: it's BiggerOnTheInside; has an unusual control console (four sides instead of six)...
* ShrinkRay: Nepol's backstory explains he was once a much taller warrior until Gorm used a weapon that destroyed his fellow warriors. He survived, but shrank to about a third of his size.
* SpiritualSuccessor: The toy line got one years later with the {{Ben 10}} series of Lego toys, which unwisely decided to reuse the exact same "not usable with other Lego, pseudo action figure in pieces" concept as the maligned Galidor toys did. Unsurprisingly, that toy line was also a resounding flop.
* SuperSpeed: Nepol.
* StockWeaponNames: Nepol's ice spear is called a Luka.
* UnroboticReveal: [[spoiler: Jens]]. He was originally a peaceful, plant-like being, until Gorm burned his body and he was forced to become a machine.
* WhiteMaleLead: Nick Bluetooth.
* YouWatchTooMuchX Alegra's reaction to Nicholas' ideas that the Map is an alien device.