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.
Power is a very common theme. Since Doflamingo is a powerful character, many fanfictions explore how he uses or abuses his power. Another theme is redemption. Some writers like to imagine if he could be redeemed or not.
Another plot could revolve around an OC who is a former victim of Doflamingo's cruel rule. This OC could be on a quest for revenge. They might start by gathering allies who were also affected by Doflamingo and then plan a elaborate scheme to take him down. Along the way, they could face many challenges and obstacles set by Doflamingo and his loyal followers.
Well, a Doflamingo OC fanfic is basically a story written by fans. It often centers around an original character. In the context of Doflamingo, who is a well - known character in One Piece. The fanfic might explore the OC's backstory, like how they came to be in the world of Doflamingo. It could also show their relationships with different characters. For example, they could be an ally or an enemy of Doflamingo, and the story would unfold based on that relationship.
A great Corazon Doflamingo fanfic could be one that delves into his relationship with his family members other than Law. Maybe it shows how his relationship with his brother was like before things went sour. It could also explore his connection with his father and how that influenced his view of the world. Fanfics like these can add more layers to his already complex character.
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.
For Doflamingo, you can focus on his flamboyant and unpredictable nature. Show his sadistic side in how he deals with enemies, but also explore his more vulnerable moments, like when his plans are thwarted. For Crocodile, emphasize his cool and calculating demeanor. Let his past failures fuel his actions in the fanfiction, like his determination to regain his lost status. Maybe show how Doflamingo's chaos sometimes clashes with Crocodile's order.
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.
I really like 'Doflamingo's Unseen Side'. It presents a different perspective on Doflamingo. It has a lot of action scenes and also explores his relationships with other characters in the One Piece universe in a unique way.