Flounder would definitely be there. He's Ariel's loyal friend and would be by her side to help face Ursula again.
I think Triton, Ariel's father, would be a crucial character. He has great power as the king of Atlantica. After Ursula's return, he might have to make some tough decisions, like whether to trust Ariel's new ideas on how to deal with Ursula or stick to the traditional ways of the underwater kingdom. And perhaps there could be a new mermaid character, a young and brave one who idolizes Ariel and wants to help in the fight against Ursula, bringing some fresh energy and new abilities to the story.
Sebastian could also play a major role. He has a lot of knowledge about the sea and its rules. He might use his musical talent in a different way this time, like using his singing to disrupt Ursula's magic spells. Also, Prince Eric could be important. He might be on land at first, but when he realizes Ariel is in danger, he finds a way to come to the underwater world to help her, using his human skills and resources to fight against Ursula's return.
Prince Eric could be a main character. He would be important as he is Ariel's love interest. Also, King Triton, Ariel's father, could play a significant role as he would be concerned about Ursula's return and want to protect his daughter and the kingdom.
Flounder could be a main character. He might be the one who first discovers Ursula's resurrection and warns Ariel. Prince Eric could also play a major role. He could lead the human side in a fight against Ursula if she decides to attack the surface world.
Ariel could be an interesting character to pair with Ursula. It could be a story of redemption where Ariel tries to understand Ursula's motives and helps her turn good. Their interactions would be full of tension at first but could grow into a friendship over time.
Well, in this fanfiction, Ursula could return with a new plan. She might form an alliance with some other sea villains this time. For example, she could team up with a group of merman pirates who have been causing trouble in the deep sea. And then, she uses their knowledge of the sea's hidden passages to her advantage, planning to take over Atlantica once again. Ariel, of course, has to gather her friends and find new ways to defeat Ursula and her new allies.
Ursula as a mermaid in fanfiction might also explore her backstory more deeply. She could have been a mermaid princess in a far - off part of the ocean. But due to a power struggle or a curse, she lost her status and became the villain we know. This could add a lot of depth to her character and make the fanfiction really engaging.
In the Little Mermaid story, Ursula is an iconic antagonist. She resides in a dark and spooky part of the ocean. Ursula's character is complex as she is not just evil for the sake of being evil. Her actions are driven by her own desires for power and control. She manipulates Ariel by making her an offer that seems appealing at first but is actually a very cruel trap.
Ursula is the sea witch in the Little Mermaid story. She is a very evil character. She tricks Ariel, the little mermaid, into giving up her voice in exchange for legs so that she can go on land to be with Prince Eric.
One interesting fanfiction could be where Ursula returns with a new and more devious plan. Maybe she disguises herself as a friendly sea creature at first to get close to Ariel again. She could offer Ariel a new deal that seems too good to be true, but of course, has a hidden, malicious intent.
One possible plot could be that Ursula, resurrected with dark magic, seeks revenge on the Little Mermaid. She might try to take away Ariel's newfound happiness, like her relationship with Prince Eric. Maybe she creates new spells and illusions to deceive Ariel and those around her.
Well, perhaps Ursula comes back with a vengeance. She might try to take over the underwater kingdom again. Maybe she targets Ariel once more, but this time Ariel has new friends or powers to defend herself.