This storm-stirring Pokémon is said to cause the seasons to turn by whipping up the air. I suspect it's humanlike form to be a false one.
an example of what is known as a "form changes," thought i suspect this strange avian guise to be Tornadus's true form. Tornadus has been sighted crossing the ocean while in this form
Type: Flying
Weaknesses: Rock, Electric, Ice
Ability (hidden): Defiant
Ability: Prankster
Category: Cyclone
Location: Alabaster Icelands
They say this wielder of electricity has waged war with its nemesis, Tornadus, since time immemorial. The lightning bolts it hurls pierce the very earth and enrich the soil.
Quick as a flash, it materializes out of nowhere. It pulverizes foes into nothingness with showers of devastatingly powerful lightning bolts launched from the string of orbs on its tail.
Ability (hidden): Defiant
Ability: Prankster
Category: Bolt Strike
Location: Cobalt Coastlands ocean area
height 4' 11"
weight 134.5 lbs.
When the incarnations of wind and of lightning clash, Landorus arrives to quell the conflict. After the tempests and thunderbolts abate, the land is sure to be blessed with bountiful harvests.
Landorus soars through the sky in this form, bestowing plentiful harvests upon the land and earning the people’s reverence. It can traverse the whole of Hisui in a mere couple of hours.
Type ground/flying
Species
Abundance Pokémon
Height
1.5 m (4′11″)
Weight
68.0 kg (149.9 lbs)
Abilities
1. Sand Force
Sheer Force (hidden ability)
Legends: Arceus
When it flies to this land from across the sea, the bitter winter comes to an end. According to legend, this Pokémon’s love gives rise to the budding of fresh life across Hisui.
Type fairy/flying
Species
Love-Hate Pokémon
Height
1.6 m (5′03″)
Weight
48.0 kg (105.8 lbs)
Abilities
1. Cute Charm
Contrary (hidden ability)
A different guise from its feminine humanoid form. From the clouds, it descends upon those who treat any form of life with disrespect and metes out wrathful, ruthless punishment.
Type fairy/flying
Species
Love-Hate Pokémon
Height
1.6 m (5′03″)
Weight
48.0 kg (105.8 lbs)
Abilities
1. Overcoat
Legends: Arceus
This Pokémon is revered as a deity in Hisuian legend. The birth of Dialga was what caused the vast river of time to begin flowing in our world.
type steel/dragon
Species
Temporal Pokémon
Height
5.4 m (17′09″)
Weight
683.0 kg (1505.8 lbs)
Abilities
1. Pressure
Telepathy (hidden ability)
Legends: Arceus
Radiant light caused Dialga to take on a form bearing a striking resemblance to the creator Pokémon. Dialga now wields such colossal strength that one must conclude this is its true form.
Type steel/dragon
Species
Temporal Pokémon
Height
7.0 m (23′00″)
Weight
850.0 kg (1873.9 lbs)
Abilities
1. Pressure
Telepathy (hidden ability
Legends: Arceus
This Pokémon is feared as a deity in Hisuian legend. The birth of Palkia was what caused the walls of our world to disappear, creating a sky that spans for infinity.
Type water/dragon
Species
Spatial Pokémon
Height
4.2 m (13′09″)
Weight
336.0 kg (740.8 lbs)
Abilities
1. Pressure
Telepathy (hidden ability)
Legends: Arceus
It soars across the sky in a form that greatly resembles the creator of all things. Perhaps this imitation of appearance is Palkia’s strategy for gaining Arceus’s powers.
type water/Dragon
Species
Spatial Pokémon
Height
6.3 m (20′08″)
Weight
660.0 kg (1455.0 lbs)
Abilities
1. Pressure
Telepathy (hidden ability)
Legends: Arceus
There is one Hisuian verse that tells of a powerful light creating a deep shadow. I imagine that this deep shadow is Giratina.
Type ghost/dragon
Species
Renegade Pokémon
Height
4.5 m (14′09″)
Weight
750.0 kg (1653.5 lbs)
Abilities
1. Pressure
Telepathy (hidden ability)
Legends: Arceus
Giratina loses its legs upon changing into this form. I believe this Pokémon must hail from a world where the heavens and the earth are as one, though I have no way of proving it.
Type ghost/dragon
Species
Renegade Pokémon
Height
6.9 m (22′08″)
Weight
650.0 kg (1433.0 lbs)
Abilities
1. Levitate
Legends: Arceus
It is the heavenly fount from which pours the light that shines across Hisui. Its luminance guides and protects all Pokémon. Hisuian mythology states that Arceus is the creator of all things.
type Normal
Species
Alpha Pokémon
Height
3.2 m (10′06″)
Weight
320.0 kg (705.5 lbs)
Abilities
1. Multitype
Legends: Arceus
Can be seen floating offshore during seasons when the seas are warm. Its azure body blends in with the ocean waters—logic suggests this is a defense mechanism against natural predators.
type water
Species
Sea Drifter Pokémon
Height
0.4 m (1′04″)
Weight
3.1 kg (6.8 lbs)
Abilities
1. Hydration
Legends: Arceus
Rumored to migrate across the oceans and visit Hisui’s coastal waters only rarely. Although Manaphy resembles Phione, it is also quite different. The relation between the two is unclear.
type water
Species
Seafaring Pokémon
Height
0.3 m (1′00″)
Weight
1.4 kg (3.1 lbs)
Abilities
1. Hydration
Legends: Arceus
When the turning of seasons brings the cruel winter to its end and the joyous people give thanks to the heavens, Shaymin appears and covers the withered land with flowers.
type grass
Species
Gratitude Pokémon
Height
0.2 m (0′08″)
Weight
2.1 kg (4.6 lbs)
Abilities
1. Natural Cure
Legends: Arceus
Upon taking in the scent of a particular rare flower, Shaymin is enveloped in light, and its tiny body transforms. I took a whiff of the flower myself, but alas, my body remained unchanged.
type grass/flying
Species
Gratitude Pokémon
Height
0.4 m (1′04″)
Weight
5.2 kg (11.5 lbs)
Abilities
1. Serene Grace
Legends: Arceus
On a moonless night, a strange incident occurred in which every one of a village’s inhabitants suffered nightmares. The villagers attested that Darkrai appeared before them in these nightmares.
Type dark
Species
Pitch-Black Pokémon
Height
1.5 m (4′11″)
Weight
50.5 kg (111.3 lbs)
Abilities
1. Bad Dreams
Legends: Arceus