mirror image info + spoilers WIP

[everything in brackets is a spoiler]

ARTIE
-a fun-loving child who doesn't take most things seriously
-Lives in an orphanage in the castle city Soleria

ALLIE
-a calm, friendly child, who's concerned about the world
-lives in an apartment with his dad in Luneris

BOTH
-have huge hands/feet due to their powers

ARTIE'S MOM
-wherabouts unknown
-[is corrupted]

ALLIE'S DAD
-is a mechanic
-custom-made Allie's motorcycle

BRIGHTON
-Artie's dad
-willing chose to be the new Brighton after "the merging"

TWILA
-Allie's mom
-was chosen to be the new Twila moments after "the merging"

"BRIGHTON" (ABYSSION)
-Claims to be Brighton, isn't really Brighton
-Is actually an insane person who wants to corrupt both worlds
-name is a reference to Tales of Symphonia
-[actually an alias of Cmdr. (something), after experimenting to corrupt himself]

"TWILA" (NEBLIM)
-Claims to be Twila, isn't really Twila
-Working with "Brighton" to corrupt both worlds
-name is a reference to Tales of the Abyss
-[actually Artie's mom, after being corrupted]

"THE CORRUPTOR"
-[Person who "taught" Abysseon and Neblim to corrupt Lightkin/Darkkin]
-[a sentient Null released from The Abyss after the merging]
-[is a mix of the original Brighton and the original Twila, both were banished to The Abyss after splitting both worlds and giving up their respective powers to normal humans]

THE WORLD
Dualtwin (the name of the world after "the merging")
Dualsol (Artie's world, the light side)
Twinluna (Allie's world, the dark side)

a world split in two halves: a fantasy-like world stuck in eternal daytime (an eternal blue sky, unlike Yanside's perpetual orange sky) and a modern-day-like world stuck in eternal nighttime

The day world, Dualsol, is blessed by sun god Brighton and the night world, Twinluna, is blessed by moon goddess Twila

(in a twist of irony, there aren't two suns or moons in either world, pre- or post-merge)

was originally two separate worlds, called "Grandsol" and "Highluna" respectively, but became one after an experiment made by both worlds to combine them

people are inconsistent on what to call them; Grandsol or Dualsol; Highluna or Twinluna

the day-night cycles "broke" after the worlds merged

in Dualsol's nighttime, even though there is no sun in the sky, the sky is still blue

meanwhile, in Twinluna's daytime, the sun is in the sky, but the sky is still black

both are due to the respective worlds' lightkin/darkkin lingering in the sky

not completely fantasy/modern-day-like, has modern-day elements in the fantasy world and fantasy elements in the modern-day world

THE SPLITTING
both worlds were split in two after an alleged war

[in reality, the first Brighton and Twila split both due to stop The Abyss from corrupting all Lightkin and Darkkin]

THE MERGING
an experiment to recombine the worlds using Brighton, Twila, and the Grand Mirror

also an attempt to bring peace between both worlds, not knowing why they were split in the first place

[the after-effects caused The Abyss to reappear, sending small amounts of both worlds there, and releasing The Corruptor]

SOLERIA
The castle city located in Grandsol/Dualsol

LUNERIS
the biggest city of Highluna/Twinluna

SYLVARANT PORT/TETHE'ALLA PORT
Dualsol/Highluna's major port towns, respectively

THE GRAND MIRROR
A mysterious mirror that, in the light world, shows the dark world, and vice versa. Even after the merging, it still shows each other's "worlds". Sometimes shows a mysterious third world with a golden sky.

Is an interdimentional portal to not only the three mentioned worlds, but countless others, [including The Abyss]

[can be used with a heavy amount of both Lightkin and Darkkin to make "interdimentional energy", allowing for both local and interdimentional travel]

BRIGHTON AND TWILA
The name of the both worlds' sun and moon, respectively

The day god Brighton, and the night goddess Twila were once good blessing the respective worlds with "lightkin" and "darkkin", until the merging

there were many different Brightons and Twilas over the ages, each passing on their powers once their time is up

the merging "killed" both, the latter choosing Allie's mom as the new Twila, the former dissolved before he could choose a new one. A ritual was made to turn a person into a new host for the "special" lightkin (aka Brighton) and Artie's dad chose to be the host

Years after the merging, two people with a device that can "corrupt" lightkin/darkkin and claim to be "Brighton" and "Twila" appeared, only to cause chaos and destruction in both worlds

LIGHTKIN AND DARKKIN
Literally light energy, and dark energy, respectively

Normally the power source/magical energy for the respective worlds, but can be "corrupted", turning into energy beings

"Corrupted" lightkin can turn creatures into light-possessed demons called the "Luminous"

"Corrupted" darkkin is both the power source for "Dark Piercers" (robots) and can also turn creatures into "Darklings"

Luminous and Darklings lose some of their senses, but turn back to normal after being subjected to the other world's energy (they regain their senses, but lose memories of being Luminous/Darklings)

Luminous can still survive in the dark world and Darklings can still survive in the light world, as long as they're not subjected to darkkin/lightkin

For some reason, neither Artie nor Allie are Luminous or Darklings, yet they carry both lightkin and darkkin in their bodies, their hands/feet becoming larger after concentrating to gather more energy inside them

Having a mix of both (must be a 1-1 ratio, otherwise the majority energy dissolves the other energy) causes "annihilation energy" (read: the Annihilator beam from Metroid Prime 2: Echoes) to happen, has no effect on normal beings, but causes both Luminous and Darklings to go back to normal

However, having a potent mix of "corrupted" lightkin and darkkin turns any creature into "Null", nigh-invulnerable beings that can only destroy

Null can also be created by merging a Darkling with a Luminous (it's not as easy as it sounds)

only "positive energy" can restore Null

Every attempt to "restore" Null results in the host(s) being severly injured or worst case scenerio, being killed

ARTIE/ALLIE'S POWERS
Due to Brighton/Twila's blessing, their bodies now generate and gather both lightkin and darkkin and store them in their hands and feet, called "positive energy"

by concentrating, they can gather more positive energy in their hands/feet, enlarging them

both can also release the energy to shrink them back to normal, but once they stop concentrating, the energy regenerates, causing them to go back to huge size

positive energy effects most things they touch, they can make things grow by having something in their hands and enlarging them, going back to normal size whenever they feel like it or after some time has passed, this also affects living things

the positive energy also protects their hands/feet (and only those), making them immune from heat/cold, and can also be used for guarding

THE ABYSS
The realm where some of the "missing parts" of Dualtwin went, literally floating continents in a realm of nothingness