Everyone has ever thought about creating their own version of the Holy Grail War from the Fate series, with replacing or adding one or more Servants, heck even the entire Servant cast, with other Nasuverse characters, OC or not, or other series casts, giving birth to incredibly awesome mega crossovers, and all that, but there is one thing no one ever tried: adding a third Servant team in Trifas Great Holy Grail War out of the blue, catching all canon characters by surprise and derailing Apocrypha's plot completely with not ever seen ways!

And the best? That team will only be formed by heroes of other franchises not even related to the Nasuverse at all, such as: videogames, anime, manga, films, books… any form of fiction. And the Master roster will be OCs from the most varied of backgrounds, personalities and even abilities: high school/college students, soldiers, childs, thrill seekers, hackers, martial artists, unconventional magi, etc. You name it!

Remember that is only an idea and is of great complexity but I think it's a good one, the problem is that I'm either lazy or I don't have the talent and/or practice necessary to try it, so I leave that as a basis or reminder of a possibly great inspiration for an epic fic/crossover/whatever.

You can choose the series of every Servant of the Third Team, I have thought of some, I repeat, don't take too much attention to the details, you're free of choosing your own Servants and of designing your own Masters as much as you want. As long as their presence make Fate/Apocrypha even more epic and/or crazier than in canon.

My preferred list of Servants for the Third Faction is the next:

Saber: Roxas/Kingdom Hearts, Raiden/Metal Gear, Nero/Devil May Cry, Fafnir Knight/Etrian Odyssey Untold.

Rider: Commander Shepard/Mass Effect, Mikazuki Augus/Gundam, Tron/TRON.

Lancer: Kyoko Sakura/Puella Magi Madoka Magica, Ruby Rose/RWBY, Highlander/Etrian Odyssey Untold, Minako Arisato(Female Protagonist)/Persona 3 Portable.

Archer: Sinon/Sword Art Online, Courier/Fallout: New Vegas, Pit/Kid Icarus.

Berserker: James Heller/Prototype 2, Doomslayer/DOOM, Lenka Utsugi/God Eater.

Assassin: Randy Cunningham/Randy Cunningham: 9th Grade Ninja, Solid Snake/Metal Gear series, Adam Jensen/Deus Ex.

Caster: Harry Dresden/Dresden Files, Jack Joyce/Quantum Break, Diablo/How NOT to Summon a Demon Lord, Delsin Rowe/Infamous Second Son.

Avenger: Haseo/hack G.U. games.

Let's see if someone can make it.