Shadowchasers: Dragon Lords (Earth-620)

Shadowchasers: Dragon Lords is a fanfiction that is a crossover of X-Men: Evolution and Yu-Gi-Oh 5Ds set in a fanon continuity known as the Shadowchasers.

The Shadowchasers
The Shadowchasers was founded as an organization 1000 years ago by a half-Dragon named Jalal Stormbringer in order to help creatures known as Shadowkind, beings from a realm of fantasy known as Shadow, be kept safe from Humans, or vice-versa.

500 years ago, the Jalal and representatives from the different Shadowkind races, representened by an Incantifier named Maskent met. In this meeting they drafted the first version of the Great Treaty, which would dictate the rules the Shadowchasers and Shadowkind would follow. One of the major rules of the treaty was known as the Fair Fight Clause, which required a Shadowchaser to best a criminal in a contest before they could arrest the criminal.

Since their founding, the Shadowchasers have moved across the entire planet, and when Duel Monsters became popular, it was adapted as the choice of combat for the fair fight clause.

The X-Men and Seidou
In this continuity, the X-Men's story was about the same as in X-Men Evolution. After the Apocalypse Incident, the X-Men's adventures continued, though eventually the first team of the X-Men where disbanded, and the X-Men went their seperate ways.

During this time, Rogue and Remy LeBeau purchased land in Montana and constructed a community for Mutants called Haven. Years after that, they re-formed the X-Men to combat growing threats from Mutants and Anti-Mutant groups, many of the children of their teammates joined them. However this lead up to the Mutant War, a conflict sparked when the United States Government launched an attack on Haven. Most of the battles of the Mutant War where fought on American Soil including the Siege of Los Angeles and a battles at sentinel facilities. However the discovery that a group calling themselves the New Hellfire Club was behind it directed the X-Men's attention at their bases on Genosha and Madripoor.

The Mutant War is considered one of the bloodiest war in history, decimating the Mutant population before the ceasefire was finally called following the Battle of Bayville. After the end of the war, many locations worldwide where designated as safe areas for Mutants where they could not be persecuted, one such area was an abandoned city a few miles from New Domino City that has come to be called Seidou where the X-Men settled.

Now, 20 years later, Seidou has become a prosperous city, the X-Men are still lead by Rogue who made a deal with Jalal Stormbringer to welcome Shadowkind into the city. The Shadowchasers and X-Men work together closely as part of the agreement with Jalal, an aware member of the X-Men serves as an unofficial Shadowchaser.

Shadowchasers

 * Leia Kaiba
 * Arashi Saito

X-Men

 * Anna Marie "Rebel" Covaks
 * Rogue (So far only acts as the narrator)