Well, a possible theme could be self - discovery. Ariel, who is curious about the human world in the original story, could further discover different aspects of herself through her relationship with Ursula. Also, there could be a theme of acceptance. Ursula, being an outcast in a way, and Ariel, who is different from her mermaid sisters in her desires, could find acceptance in each other. And of course, there could be a theme of transformation, both physical and emotional, as they interact.
Well, it's hard to say it's a widely popular genre. There are so many different types of fanfic out there. Some people might be really into this kind of unique pairing between Ursula and Ariel, but it probably doesn't have the mass appeal that more common pairings in Disney fanfic might have. A lot of factors like the overall perception of the characters and the themes that can be explored in such a pairing play a role in its popularity.
One common theme is redemption. Since Ursula is often seen as a villain, many fanfics explore her path to redemption, especially in relation to Ariel. Another theme is the power of friendship. Despite their differences, they can form an unexpected bond.
One common theme could be the allure and power play. Ursula is often portrayed as a seductive character, and in fanfic with Eric, there might be a tug - of - war between her charm and Eric's princely status. Another theme could be forbidden love, as their relationship might not be the norm in the original context.
One common theme is redemption. Ursula is often seen as a villain in the original story, but in femslash fanfics, she can be redeemed through her relationship with Ariel. For example, Ariel's kindness might make Ursula question her evil ways.
One common theme could be redemption. Maybe the male Ursula has a change of heart. Another could be adventure, as they go on some sort of journey together.
Another theme is the power dynamic. Since Ursula is a powerful sea witch and Ariel is a mermaid princess, their relationship in fan fictions often plays with this power difference. Sometimes Ariel gains power over Ursula, and other times it's the opposite.
An interesting Ariel and Ursula lemon fanfic often has well - developed characters. Since Ariel and Ursula are very different in the original stories, seeing how the author explores their relationship in a new context can be captivating. For example, if the fanfic delves into Ursula's backstory and how it might influence her interactions with Ariel in a more adult - themed relationship. Also, a unique plot that deviates from the typical good - vs - evil dynamic can make it stand out.
One interesting aspect is their power dynamic. Ariel has her beauty and her pure heart, while Ursula has her magic and her cunning. In non - lemon fanfics, their interactions can be full of tension as they try to outwit each other. For example, Ursula might try to use Ariel's naivete against her in a more complex plot than just the simple exchange in the original movie.
One possible plotline could be that Ariel and the urchin are from different worlds and they have to overcome various obstacles to be together. Maybe there are cultural differences between their species that they need to navigate.
She could be more assertive in a rather dark way. Ursula is a very dominant character. Ariel, growing up under her influence, might not be as gentle as in the original story. For example, when it comes to getting what she wants, she might use more forceful or underhanded methods, rather than her pure - hearted charm in the original.