Pokémon: Giratina and The Sky Warrior

From IMDB: "Pokémon: Giratina and the Sky Warrior" is the English title for the eleventh theatrical movie spin-off from the popular Pokémon TV series. The movie's basic premise centers around the existence of a "Reverse World," a kind of alternate universe designed to correct imbalances in the "Real World." Five years before the events of this movie, a research scientist named Newton Graceland apparently discovered the Reverse World and its sole resident Pokémon, Giratina, a winged, six-legged, metallic dinosaur-like creature. Newton and his assistant Zero plot to harness Giratina's power and take over the reverse world.

Series regulars Ash, Dawn, and Brock, along with their regular Pokémon companions, get roped into all this through the intervention of a cute, grassy little Pokémon called a Shaymin, who's on its way to the "flower garden" for the "flower-bearing" ritual with other Shaymin. Shaymin can communicate telepathically so we can hear its articulated thoughts, making it one of the very few Pokémon (outside of Meowth and Mewtwo) who can actually "talk". Shaymin's connection to Giratina and the Reverse World has something to do with its ability to render toxic material harmless via some internal process. Giratina seems to need Shaymin's help. In the end, Newton, who enlists Ash and his friends to help him, finally figures out what Giratina wants.

Tropes used in Pokémon: Giratina and The Sky Warrior include:

Ambiguous Gender: Shaymin, even for a "genderless" legendary. In Land Forme, speaks with a soft, feminine voice (and in Japanese, uses feminine pronouns); in Sky Forme, it is headstrong and speaks with a much more masculine voice (and accompanying Japanese pronouns.)
Awakening the Sleeping Giant: Zero's meddling in the Reverse World does this to Regigigas.
Awesome Backpack: Newton's backpack.
Badass: Regigigas
Badass Adorable: Shaymin in its Sky Form.
- Newton's Shieldon. It's tiny, adorable, and knows Flash Cannon.
Big Bad: Zero.
Big Damn Heroes: Regigigas, once the glacier starts to move, wakes up and - with the help of a herd of Mamoswine - holds the glacier in place till Ash can do his thing.
Break the Cutie: Zero in the Manga.

Zero: *after Newton deletes the blueprints to the Megarig* How could you...PLEASE...DON'T DISAPPEAR!!
Newton: Leave it be, Zero...this is how it should be. We cannot sacrifice Giratina for the sake of our research. Please understand, Zero!
Zero: *crying* All...All I wanted...I hate this polluted world...I just wanted to stay in the beautiful Reverse World...That's all...

Cool Airship: The Megarig.
Continuity Nod: Along with Arceus And The Jewel Of Life, this is part of a series that is kicked off by the events of The Rise Of Darkrai.
Decoy Protagonist: Without dying, but who thought Dawn was the main character in a movie with a cute little fuzzy thing?
Disney Death: Giratina pulled that off. Luckily, Aromatherapy doesn't just cure all the status ailments in your party, it also brings Olympus Mons back to life!
Eldritch Abomination: Giratina.
Flight: Shaymin Sky Forme's main ability and distinguishing power from its Land Forme.
Gravity Sucks: A LOT of sucking in and out of the Reverse World.
Groundhog Day Loop: Dialga traps Giratina in one of these so it can escape the Reverse World without the latter following it.
Hey, It's That Voice!: In the dub, once Shaymin changes into its Sky Forme, it becomes obvious that Shaymin has the same voice actress as Tails during the 4Kids era.
- - And Dorie in Normal Forme.
- Not to mention that the dub voice for Zero is the same guy who also voiced, of all people, Jaden Yuki!
- Giratina uses the same roar as Mothra.
  - The Megarig itself emitted Megaguirus' screech.
Ho Yay: There was something going on between Zero and Newton Graceland. After Zero's early Face Heel Turn, there is considerable Foe Yay between the two.
Impossibly Cool Clothes: Zero's jumpsuit comes to mind here.
- Do the gloves come off? No, they do not. Is there a zipper? NO, THERE IS NO ZIPPER!!
Insufferable Genius: Newton brags about how he is a genius (if he does say so himself) and it shows in his Crowning Moment of Awesome when he shuts down the entire Megarig. He also shows some pretty Badass skills while piloting that Airbike, avoiding attacks all with two kids along for the ride.
Involuntary Shapeshifting: This happens to Giratina whenever it leaves the Reverse World or returns to it, and to Shaymin when it comes in contact with the pollen of Gracidea flowers (as well as when night comes or it gets encased in ice if in its Sky Forme.)
Jerkass: Shaymin in the beginning of the movie.
Killer Rabbit: Shaymin once it snorts its signature flower.
- Though it's really more of a dog/reindeer hybrid.
Large Ham: Both Newton and Zero seem to be this, though Zero's doesn't really show at first until after the two of them meet up again.
Leitmotif: Zero has one: Zero no Wana (Zero's Trap).
Let's You and Him Fight
Magic Skirt: Dawn in the Reverse World. Even though Gravity is berserk there, no Panty Shot for you.
Meaningful Name: Zero...but that one speaks for itself.
- Newton Graceland's Japanese name is Mugen, which means 'infinite', while his English name may come from the scientist Issac Newton, who developed the concept of gravity. The last name 'Graceland' is a play on the Gracidea flower garden.
- Then you have the holographic maid in Zero's ship, Infi, whose name is also a shortened form of infinity; her character design also incorporates lemniscates.
Mirror Universe: The Reverse World. Supposed to be an Pokemon equivalent of an antimatter universe.
- Could be that antimatter things are turned into normal matter or vice versa when traveling between worlds.
Never Trust a Trailer: Based on this early poster for the movie, you'd think Palkia appears, but ultimately, it plays no role in the film whatsoever, appearing only in a brief flashback to Movie 10.
- Not to mention some scenes that appear in some of the Japanesse trailers that don't appear in the movie.
Poor Communication Kills: Giratina's mad at Dialga and needs Shaymin's help, Shaymin thinks Giratina wants to eat it, Ash and the gang think Giratina's evil, and then the plot happens.
Peek-a-Bangs: Zero has bangs that curl upward naturally and cover his right eye.
A Pupil of Mine Until He Turned to Evil: Zero was once Newton's assistant/pupil until Newton deleted the blueprints to the Megarig.
Sequel Hook: Giratina's still pissed off at Dialga, so the end of the movie has him going off somewhere to go after him.
Scenery Porn On Wings: Really.
Slasher Smile: Zero delivers a rather creepy one at one point.
Split Personality: Shaymin in Land Forme is cowardly, rude, and ungrateful, but when it changes to Sky Forme, it becomes brave, adventurous, and headstrong, almost like it becomes an entirely different Pokemon
Red Eyes, Take Warning: Giratina; they even glow when it's really pissed.
This Is Sparta: RE. GI. GI. GAS.
Villainous Breakdown: Zero appears rather calm and collected at the beginning of the movie, but after he captures Shaymin and uses it to open a portal using Seed Flare in order to allow Giratina access to the real world again so he can put his evil plan into fruition, he starts showing a dramatic change from being almost stoic to going off the deep end by the climax of the movie.
- He also had an even BIGGER breakdown in the manga version.
Well-Intentioned Extremist: Zero thinks that by destroying the real world, he's saving the Reverse World. This causes him to nearly murder the guardian of the Reverse World in the process.
What the Hell, Hero?: This is the reaction Ash and Co. have when they find out that Newton designed the Megarig.
White-Haired Pretty Boy: Zero, he also has Eyes of Gold too.
With Great Power Comes Great Insanity: Zero...All the way.