Back with some more info, this time for Pokedex data on the Spirits, though Mayuri and Nia are being skipped for this. I actually have an idea of how I'm gonna go about this fanfic. It'll of course take place after Kalos but before Alola, so no Pokemon will appear or be referenced from Sun and Moon. If you have any other questions, feel free to ask.

From Kurashi Odjin:
Kuruchu :p

Bakuganman: Well played. 👌

From 54godamora:
Kurumi.

Question: what are Spirits weak to? Wizards?

so how long does it take before these Spirit 'Pokemon' want to jump Ash's bones despite him being denser than a black hole? Also this:

Latias: I sense a great disturbance. As if suddenly, I'm no longer the only Pokemon that is in love with MY Ash.

Bakuganman: No. Lore-wise from Date A Live, Wizards use artificial Spirit Power, so that makes them artificial Spirit Types in the Pokemon sense. That Latias joke got me good.

From Omnisaurus:
So basically the Spirits are gonna be bangable Ultra Beasts?

...

...

... yeah, I'm down for that.

Bakuganman: Yes.

Pokedex Entires for "Spirit" Pokemon:

Initial Entry: Pokemon: unknown. No available data.

Official Entry: This is a Spirit Pokemon. Approach with caution. No further data available.

Official Entry (Updated): A Spirit Pokemon, Codenamed: {Insert Spirit's Codename here}. Approach with caution. No further data available.

Updated Entries (Upon being Captured, Sealed, studied, etc.):

•Tohka Yatogami: Tohka, the Warrior Princess Pokemon. Tohka wields a powerful sword called Sandalphon that can cut through any material, and can even cause earthquakes. She also has a shocking appetite, and eats as much as a Snorlax can without gaining a single pound.

•Yoshino Himekawa: Yoshino, the Hermit Rabbit Pokemon. Despite her small, timid appearance; she can control and manipulate ice and water to a shockingly effective degree, but her shy nature normally prevents her from engaging in any forms of conflict.

•Kurumi Tokisaki: Kurumi, the Timed Nightmare Pokemon. Kurumi has 12 different powers based on the concept of time, each being activated by a number on her Angel Zafkiel. They range from rewinding, accelerating, and pausing time on her opponents.

•Origami Tobiichi: Origami, the Angelic Devil Pokemon. With serval pillars than can spawn on command and a seemingly infinite number, there is no direction Origami cannot target, nor have any blind spot of any kind.

•Kotori Itsuka: Kotori, the Efreet Cannon Pokemon. Kotori has tremendous firepower on par with Charizard, and can even heal from fatal injuries remarkably quickly.

•Kaguya Yami: Kaguya, one of the Twin Twister Pokemon. Kaguya can pierce through the hull of a space shuttle with ease thanks to her Lance-like Angel, giving her the nickname "The Hurricane Knight".

•Yuzuru Yami: Yuzuru, one of the Twin Twister Pokemon. Yuzuru's chains can bind even a Machamp and keep it contained for serval hours. In fact her chains are so durable, a Hariyama can be lifted off its feet, and thrown over 5 football fields without difficulty.

•Miku Izayoi: Miku, the Diva Pokemon. With a hauntingly beautiful voice, she can sing songs with a variety of different effects.

•Natsumi Kyouno: Natsumi, the Witch Illusionist Pokemon. Using her broom Haniel, Natsumi can become a perfect copy of anything she sees. Her illusionary powers rival Zorua, Zoruark, and even Mr. Mime; and can even put a Ditto to shame with how strikingly accurate her transformations are to the real thing.

•Mukuro Hoshimiya: Mukuro, the Zodiac Pokemon. Mukuro has the power to lock away the powers of her opponents with her key she calls Michael, and this power also works on people and objects.

Possible Trainers/Owners for Spirit Pokemon (subject to change. May get updated over time):

Ash - Tohka (Reason: They both are a bit dense, and love to eat)

Serena - Yoshino (Reason: A sisterly-type bond)

Serena - Miku (Reason: Performing)

Dawn - Miku (Reason: Contests)

Ash - Kurumi (Reason: For planned plot. Kurumi seek him out due to his aura)

Dawn - Mukuro (Reason: Both like style, especially the hair)

Paul - Origami (Reason: Both want/like power)

Team Rocket's Jessie, James and Meowth - Kurumi (Reason: For planned plot. Temporary alliance)

Brock - Kaguya and/or Yuzuru (Reason: Both twins are easily annoyed, which can mesh well with Brocks running gag)

Sawyer - Kotori (Reason: Both like gaining information)

Clemont - Kotori (Reason: Same as Sawyer. Both like gaining information. Can also be used for Bonnie's running gag)

Bonnie - Yoshino (Reason: Same as Serena. A sisterly-type bond)