Luffy's victory over Doflamingo in the manga was a combination of factors. His growth in strength, his unwavering will, and his ability to adapt to Doflamingo's tactics all played a role. Additionally, the support of his friends was crucial in tipping the scales in his favor.
If Luffy was kidnapped in a fanfiction, his crew would surely go to great lengths to rescue him. Nami would probably come up with a smart plan, using her knowledge of the seas and navigation. Zoro would be ready for a fight, not fearing any opponents in the way. Sanji would keep everyone fed during the rescue mission, while also being prepared to kick some kidnapper butts with his powerful kicks.
One character that would make for an interesting pairing with Doflamingo in a crossover fanfiction is Zoro. Zoro's strong sense of justice and his skills as a swordsman would clash with Doflamingo's devious ways. They could have epic sword battles, and Zoro might be the one to cut through Doflamingo's strings, both literally and metaphorically. Also, Nami could be paired with Doflamingo. Nami's intelligence and ability to manipulate situations for her own gain, although in a more positive way compared to Doflamingo, could lead to some really interesting interactions. She could try to outwit him in a game of wits.
Yes, there might be such fanfictions out there. The idea of crossing over Naruto and One Piece universes in this way is quite creative. Some fanfiction authors like to explore unique character relationships and scenarios by bringing characters from different anime together.
I'm not entirely sure what specific aspect you want to know about. If you're asking for some good Doflamingo OCs in DeviantArt fanfictions, you might need to search through the DeviantArt website using relevant tags. There are often many creative interpretations of characters in fanfictions.
I'm not really into this kind of fanfiction much. But generally, in such fanfictions, the relationship between Doflamingo and Law might be explored in a very different way from the original story. Maybe it focuses on their power dynamics and how they interact with each other in a more personal or emotional level.
A key element is the power clash. Doflamingo has his own set of powers from his original series, and when put against the RWBY characters' abilities, it creates intense and exciting battle scenes.
Power dynamics is a very common theme. Given that both Law and Doflamingo are powerful characters in their own right, fanfictions often explore how they interact in terms of power. For example, who has the upper hand in different situations.
One possible storyline could be that Naruto, through some strange dimension - hopping incident, ends up in the One Piece world. There, he witnesses Doflamingo's power and charisma from afar. Doflamingo's ability to control and manipulate situations might intrigue Naruto, who has always been about facing strong opponents. He starts to study Doflamingo's tactics and gradually becomes a fan, trying to incorporate some of Doflamingo's strategic thinking into his own battles, all while still maintaining his core values from the Naruto world.