Yes, i'm here too.

Odin was one of the OG monsters who was created shortly after the birth of Meropos along with Elda, The Fish Lady, and Abbil. Odin represents Umbral Magic.

One day, Odin met a skeleton monster who calls himself Nightmare. Nightmare tells him that Meropos is going “off script” and going “off script” could cause destruction. He tells Odin that if he wants to save Meropos, he needs to cause as much necessary chaos as possible. This freaked the hell out of Odin, so he created a plan to make that “necessary chaos”.

To commence his plan, Odin met King Ozrich at Ilkira Forest where we all know where this is going.

Vessel originated from an AU where he was the twin brother of Undyne. Him and his sister were part of the Royal Guard with Vessel working as Undyne's body double.

One day, in the multiverse, Ink and Error had a fight where Error pull his strings to destroy a lot of AUs. Vessel's AU was destroyed because of this event. Although Core managed to save everyone in his AU, they couldn't find Vessel's code.

Vessel's code drifted across the Void before it entered an AU where he was resembled again.

He woke up at a strange place, it was a coastal city at the shores of a desert area. And in the city, he sees humans and monsters are living in harmony. Lot of the humans have colorful hair and can use magic as opposed to the Frisk from his AU, and they all look like they came from a fantasy story.

But he can't really recall what happened. As he's lost most of his memories and the only few things that he remembers were his name, and vague memories of his sister and the human.

Zanshi Youmei, who was in the city at the time, noticed Vessel being confused. Zanshi walks up to Vessel, asking him where he came from because she never seen the type of clothes that Vessel is wearing. Vessel told her that he doesn't remember anything besides his name, and after hearing his stomach growls, Zanshi brought him to a nearby tavern.

At the tavern, Zanshi noticed Vessel's physique while he indulges himself with a hearty meal. Zanshi thought to herself that Vessel might have some fighting experiences, but she can't fully believe it until she proves it for herself.

After leaving the tavern, something came at Vessel at a high speed. Vessel quickly dodged it, and it was revealed that the attack came from Zanshi herself. Vessel was mad at Zanshi, thinking that she was trying to kill him, but Zanshi quickly reveals her true intentions that she only wanted to see if Vessel is capable of fighting because she noticed his physique.

Zanshi brought Vessel to her arena at Aranseer where he excelled in the tests that she gave him. Zanshi, thinking that Vessel already proves himself, gives him one last challenge, a duel with Zanshi's daughter Jun. Jun was already spectating Vessel in his tests, and despite Jun having the advantage of her being a Chroma monster and having more combat experiences, the fight ended with a draw.

Jun and Vessel would later be promoted to Knight Captains after Zanshi retires. And although Vessel is Jun's body double, he prefers to do his own thing of seeking for lost treasures.

So Rainer and Kota are father and daughter here. Rainer was blessed with a traited daughter despite him and his late wife being traitless. One day, Kota was taken away by loan sharks because of Rainer’s debts. Rainer, thinking he had nothing left, joins the Hollow Hunters as a last resort.

If you’re wondering what happened to Kota, she’s fine, actually. The carriage that the sharks drove crashed and killed everyone except Kota. She was later found by a group of Gardeners who took her in.

-The Sideros moved to Amikeko after slavery became less profitable and because of the rising tensions between Pacienco and Justeco.

-Gall and Marsile were born in Pacienco.

- Pandora gets dipped in cyan paint. Her and Gall switched traits.

-Ramsha Agni is now called Arisha Dreemurr. And also, Ramsaes is Asgore's younger brother.

-Toriel was a Gardener that Asgore fell in love with.

-Vessel is not from Meropos. He was originally from an AU where he was Undyne's brother, but one day an "Event" happened where a lot of AUs went to war. Vessel got glitched into a Void where he wound up at the shores of Kurago in Meropos. Although he lost his memories, he's shown to have great combat skills and later became the Kurago Knight Captain along with Jun.

-Jiixo is now called Nia. Because I kept thinking of Nia From Xenoblade Chronicles 2 for some reason.

Determination: Jack Of All, Master Of None (Access to weaker versions of the other trait abilities), SAVE, LOAD, RESET (Exclusive to The Player DT Soul such as Frisk. Copper and Zerida doesn't have them)

Bravery: Pyromancy, Heightened Strength, Speed Boost (Orange Soul mode in Deltarune)

Justice: Ranged Projectiles (Yellow Soul mode in Undertale/Deltarune/Undertale Yellow), Slight Dash (Yellow Soul mode in Undertale Yellow)

Kindness: Healing (Green attacks in Undertale/Deltarune), Projecting Shields (Green Soul mode in Undertale/Deltarune)

Patience: Time Manipulation, Slight Invincibility (Cyan Soul mode in Deltatraveler), Projecting Blades

Integrity: Gravity Manipulation, High Jump (Blue Soul mode in Undertale), Projecting Air Platforms.

OG version:

How they fell:

Cassie: Got lost at Mt. Ebbot while going on a field trip.

Zero: Came to the Underground as a part of a challenge.

Mitch: Got tricked by bullies.

Toru: Got kidnapped, and then thrown into the Underground.

Aria: Fell while trying to seek for help after a car accident.

How they died:

Cassie: Killed by a trap.

Zero: Speedran his way to Asgore where he was killed by him at the end.

Mitch: Got tricked into eating a poisoned taco.

Toru: Ganged by a group of monsters.

Aria: AXIS.

Fell order:

Their backstory are the same as the originals. Marsile getting abandoned by her parents, and Arcane having his parents executed. But their fates are switched.

Marsile had to fend for her life by herself and then joined the Hollow Hunters run by her parents to try to take revenge on them. While Arcane gets adopted by the Rutrows and became the Prince of Amikeko.

Marsile never gained a trait while Arcane gains one. And since Arcane’s weapon is an axe which he then switches to a sword, Marsile starts with a bow and then switches to a gun because why not.