My inspiration for this story came from Kamen Rider Decade Complete's story Ninja Rider GX. This will be a triple crossover between RWBY, Yu-Gi-Oh GX and Dragon Ball Z. But instead of using the Signer Dragons, I'd prefer to use four certain dragons from Yu-Gi-Oh Arc V.

Main Pairing: Jaune/Harem (maximum of three girls)

Anyway, here's a little intro chapter just to get the ball rolling. After this I'm gonna update Dragon Ball Z ARC and focus on that while I build decks for this story. Turles, you mind doing the disclaimer?

Turles: Not a problem, my friend. It's the least I can do. Ahem! The following is a non-profit fan based FanFiction crossover. Dragonball, Dragon Ball Z, Dragon Ball GT and Dragon Ball Super are all owned by Funimation, Toei Animation, Fuji TV and Akira Toriyama. Please support the official release. Also, Yu-Gi-Oh!, Yu-Gi-Oh GX, Yu-Gi-Oh 5D's, Yu-Gi-Oh Zexal and Yu-Gi-Oh Arc V are all owned by Konami. Please look out for the release of new cards. Finally, RWBY and all its characters are owned by Rooster Teeth and Monty Oum. May he rest in peace.

Prologue! - The War that Started it All!

As the story begins, a wall filled with ancient carvings very similar to hieroglyphics comes into view. They all slowly become visible as a voice begins to narrate the story.

"Millennia ago, before the Grimm had ever walked the lands of Remnant, four great kingdoms learned how to harness the powers of a game that contained great and terrible power. Each kingdom chose to specialize in one of four types of creatures to this game."

"Pendulum… Synchro… Xyz… and Fusion."

"And the kings and queens of each kingdom possessed a guardian dragon that embodied their summon type: a protector of their individual realms. And for many years peace reigned throughout the lands of what is now known as modern day Remnant. But what the four kingdoms failed to realize was that this great era of peace was not to last."

The scene changes to a background of fire obscuring the visage of a woman and several beasts made of pure darkness with bone armor. The only way you can tell it's a woman that possesses those evil red eyes is her dark laughter echoing through the shadows.

"As the years passed, dark flesh eating creatures known as the Grimm began to emerge from the shadows, lead by an evil sorceress known only as Salem. Her Grimm army began to terrorize and invade the four kingdoms."

The scene shifts to many smaller villagers. The warriors of the villages try to fight back with the aid of their spirit guardians, but they are soon overwhelmed by the sheer numbers of the foul creatures known as Grimm. Houses are set ablaze, families are killed, humans and Faunus alike are eaten alive by these beasts.

"The smaller villages are quickly brought to their knees by Salem and her bestial army. The defeat of the Four Dimensions Kingdoms seemed inevitable… until one day, four saviors rose up to fight against Salem and her army of Grimm. These heroes called themselves Saiyans."

Salem growls in anger as even her mightiest Grimm are easily defeated by the sheer power and ferocity of these four Saiyans. And it gets even worse for her when the Four Dimensions Dragons arise from their stone slabs and join the Saiyans in their final fight against Salem.

"Combining their powers and drawing on the magical essences of the four summon types, the Saiyans and the guardian dragons imprisoned Salem in the Dark Dimension. Sealed away for many millennia to come. But Salem's war did not leave the world of Remnant unaffected. Her remaining Grimm forces continued to ravage the land, consuming all who dared to stand in their way. The humans and Faunus were soon at each other's throats because of the corruption within the Schnee family, and the Saiyans and Guardian Dragons disappeared from the world. Now, the time has come for a new generation to rise up and defend the world from the return of Salem just as the Saiyans did… five thousand years ago…!

Present Time

The Dark Dimension… a world that is plagued by constant darkness and negative energy. But within that swirling mass of dark energy was a single unidentifiable individual. The only things one can make out are a staff made from Grimm bones, and a pair of pulsating red eyes.

"Hm hm hm hm hm…" came a feminine laugh.

She lifted her staff and called forth the dark energy from within the Dark Dimension, she looked through the crack between the dimensions. The visage of the Four Dimensions Dragons appeared within the viewing orb. Salem scowled as she remembered her defeat at the claws of these beasts, but took comfort in the fact that the spirits of those cards had yet to awaken and regain their strength.

But hers was slowly returning.

Even as she stares out into the void, Salem continues to gather power from the darkness around her. Though, she understands that it will still take some time to regain her strength after such a battle. Especially since she had yet to come to terms with how she so blatantly underestimated those Saiyans that she fought. Oh yes, she thought it would be an easy win. How wrong she was.

"My vengeance must be satisfied! I won't rest until the descendants of those four Super Simians are vanquished! THEY'LL PAY FOR WHAT THEIR ANCESTORS HAVE DONE TO ME, AND THEY'LL PAY IN BLOOD!" Salem raged.

On her viewing orb, we now see four faces appear on it. Three of them are shadowed over, but we can see that they are clearly female. The only visible face was a seventeen year old boy with messy blonde hair and blue eyes. Salem smirked as she saw this.

"A little more… I just need a little more, and I will finally escape this domain of darkness!" Salem said to herself. "And my pawns are just the ones I need to get the pieces I need to utterly destroy these fools!"

Salem cut the power to her viewing orb and focused on absorbing power for her eventual escape from the Dark Dimension. Her wicked grin grew as she resumed her evil laughter.

"He he he… ha ha ha ha ha… AH HA HA HA HA HA HA HA HA HA HA HA HA!"

TO BE CONTINUED…!

Okay, now I'm sure you all know the Four Dimensions Dragons: Odd-Eyes Pendulum Dragon, Dark Rebellion Xyz Dragon, Clear Wing Synchro Dragon and the recently released Starving Venom Fusion Dragon.

Well, in the reviews you post, I'd like you guys to tell me which of the four dragons you would like Jaune to have. I've already got a decent deck idea for if he gets Starving Venom Fusion Dragon, but I'd like to hear your ideas. And the three girls in Jaune's harem will also each have a Dimension Dragon, so feel free to send in ideas for which girls should be in the harem (3 girls maximum) and which dragon they should have. Thank you, and I'll see y'all in the next chapter of Dragon Ball Z ARC!