There could be a lead 'bad girl' who is the most rebellious and fearless. She might be joined by her friends or other girls who she meets on the island. Their personalities could range from sassy and outspoken to cunning and resourceful, and together they form the main characters in this 'bad girl island story'.
Well, there must be the bad girl herself. She's likely at the center of the story, causing all kinds of trouble or having a negative impact on those around her.
I don't have enough details to know the main characters. But they could be survivors if the story is about a disaster - like a brave sailor, a resourceful young person, or an experienced adventurer.
There could also be a male character who is caught in the middle of the good girl and the bad girl. He might be attracted to both of them for different reasons. He could be a jock who is used to getting attention from girls, but the good girl and the bad girl present him with different challenges. He has to decide which one he really wants to be with, and this decision could be based on his own growth and values.
Obviously, the main characters are the good boy and the bad girl.
I'm not sure exactly as I haven't read it, but surely the bad girl is one of the main characters. There might be a best friend character who either supports or clashes with her.
In the 'Gossip Girl' series, Serena van der Woodsen is one of the main characters. She is often seen as a 'bad girl' as she has a wild past and is involved in various romantic and social dramas. Blair Waldorf is another key character. She can be quite mean - spirited at times in her pursuit of status and love, often engaging in schemes against her friends and rivals.
Well, without more context, it's hard to say precisely. It could be a fictional tale about girls on an island who are up to no good, like causing trouble for the local inhabitants if there are any, or getting into conflicts among themselves. It could also be a story of self - discovery where these 'bad girls' learn and grow while on the island.
Since I haven't read this particular Wattpad story, it's hard to say exactly. But likely, the main character is the girl who goes from good to bad. There might also be a best friend who tries to stop her from changing or a love interest who either encourages or discourages her new behavior.
In the 'Shutter Island' story, there's Teddy Daniels. He's a key character, a U.S. marshal who goes to the island to investigate. He's a complex character, with a lot of emotional baggage from his past. Then there's Chuck Aule, his partner. They work together to try and figure out what's going on in the Ashecliffe Hospital. There are also other important characters like Dr. Cawley, who runs the hospital. He plays a crucial role in the story as he is involved in Teddy's treatment, although Teddy doesn't realize it at first.
Since I don't know the exact 'Black Island Story', it's hard to say who the main characters are. It could be a group of adventurers.