Louise wanted to prove to everyone she was more than just the Zero. However, she needed help to accomplish that. Unknown to her, she would end up summoning someone who would do just that. Shirou Emiya Aozaki wished to be a hero, but his world discouraged such dreams. However, he was called to a world in need of a hero. Louise and Shirou, Master and Familiar, The Zero and the Forge.

In a cataclysmic clash on Cybertron, the Autobots falter against the vile Decepticons. Optimus Prime, undaunted, orders his warriors' retreat, seizing the "All Spark" for a solitary flight. As the fabric of space-time ruptures, a wormhole ensnares him, catapulting the valiant leader into the enigmatic world of "Familiar of Zero"– a destiny unforeseen.

Louise summons the Leader of the Dinobots Grimlock instead of Saito.Same basic thing as the Familiar Of Zero but with Grimlock and not as much romance that would be kind of weird in this crossover.Familiar Of Zero/Zero no Tsukaima X Transformers: Animated

Well since all the cool writers are doing it, here's my own one shot series.

The Reclamation has begun and the UNSC Eternity is now on the run after fleeing the Orion Arm - into the safety of slipspace. Only to end up marooned on a strange magical world. Inspired by an earlier Halo x FoZ fanfic called "Zero to Infinity"

Three ace commanders of war are summoned to the world of fantasy and magic as familiars. How can they fare well in a world of fantasy and magic where science and technology never been develop. Follow our three commanders as they learn and at the same time wreck havoc with to the common sense of this fastasy medieval world along with their technological firepower!

Louise Françoise le Blanc de la Vallière Siempre había deseado ser una noble a pleno derecho. En su dolencia, le había pedido al universo el poder y conocimiento para poder tener las características de uno,y en su suerte, el vació la había escucho..fue una lastima que no especificara como quería que eso llegara a ella...Solo y con su arma del gremio, Momonga ha llegado a Halkeginia

Wandering the world since the end of Miraak, the Dragonborn is thrust into another realm. Will he help the realm or will he let history unfold around him? (Story may get bumped to M depending on how it goes)

Tras dominar toda Equestria, Ainz se sentía que algo le faltaba, deseaba aventura, un susurro, una petición desesperada y un portal le dieron lo que pedía, ahora se encuentra en Halkeginia y una peli rosada ruidosa dice ser su nueva ama, ¿es esta realmente la aventura que deseaba?, habrá que averiguarlo, basado en la NL de Zero. Continuación de Ainz Ooal Gown en Equestria

Ichigo is summoned by a little girl with pink hair to be her pet. He not-so-kindly refuses. Crossover.

"A new overlady, you say? She's a little short, although her temper is impressively vile. Oh well. Needs must when needs must. Too long have the lands of Halkeginia gone without true Evil. There are fluffy bunnies and happy ponies all over the place, frolicking! It makes me quite sick! No, it doesn't matter if she wants to or not. Because Evil always finds a way."

Following Denji's first transformation, and fight against the Zombie Devil, he is whisked away to another world. Before doing so, Pochita gives Denji the ability to conceal his devil nature to live a normal life, preventing him from transforming. While feeling optimistic about his new life, his pink-haired summoner is far less enthused about her new, ill-mannered familiar.

Louise's summoning of her familiar was supposed to be the ultimate, final proof that she was truly a mage. But, instead she somehow found herself in a place called Raccoon City on an entirely different world. A world where magic didn't exist, and when that world falls apart, she and the boy who was supposed to be her familiar must fight for their lives against the evil around them.

Okay, we all know the song and dance, right? Louise summons Saito, kisses him, makes him her familiar, and then heaps of abuse come after. Great, now that it's been summarized, let's add a twist...what if Louise DIDN'T get Saito? What if she ended up with someone who was different in every way? What sort of impact will this new person...this new woman have in Louise's life? R&S

Louise summons a GLA command truck and a bumbling manservant with a sledgehammer.

The one armed wolf had fulfilled his purpose. He saved his master. But now what? Maybe there's another master to serve. As a Shinobi, as a warrior, as a familiar. This is my first story, so please be nice.

《The final passage reads: 'On that Fated Land, a Great War shall transpire. Darkness will prevail and the Light expire'. You really think you can change the future?"》 A mysterious World, a journey to change fate itself, a special emotion. "There is One Sky, One Destiny, even in the Other Side" 《 May My Heart Be My Guiding Key 》

louise finds book which is connected naruto universe. Let's see what happens as the story continues.

Mocked by her peers and a failure as a mage, now she finds herself alone in a foreign land ravaged by a civil war. With the world on the brink of destruction her life couldn't get any worse, could it? Reverse summon AU.

Kelsier spoke of a world before the Lord Ruler, a world where plants were green and ash didn't fall from the sky. That was crazy, of course, and even if such a world did exist, Vin knew she would never see one. But she had been wrong before, and Louise de La Valliere needed a familiar.

A young girl who longed only for the chance to live up to her family's legacy. A too young veteran that was robbed of her childhood. A young man who lost everything in the aftermath of a terrible battle. Full summary inside.

In a valiant effort to halt a weaponized particle accelerator, 17-year-old Tony Stark, Iron Man, finds himself caught in its blast. Transported to a magical realm, Tony is summoned by Louise as her familiar in the world of Familiar of Zero. Struggling to adapt, Tony must now aid Louise in her adventures while relentlessly seeking a way to return home and protect his own world.

After reuniting with her family, Yui is suddenly summoned into Halkeginia by Louise. little did Louise know that the rest of Alfheim followed their lost young to the new world.

Wishing for a familiar like Louise's that would also save her nation, Henrietta performs the summoning. From out of a peaceful retirement far away from battle, a Griffin commander is brought back into the fray. Moved by her plight, he accepts the impossible task set out before him: to guide Tristain to victory as a commander and bring about a last second miracle.

Zelda and Louise have been friends since their first year. When they both summon peasant familiars from different worlds, they must go through several shenanigans.