Since I don't know the exact 'triplets secret novel', I can't say for sure. But likely the triplets themselves are main characters.
Without having read the 'triplets secret novel', it's tough to determine the main characters. However, based on the title, we can assume that the triplets are key characters. There could be a villain or an antagonist who is trying to either expose or suppress their secrets. Maybe there is a wise old mentor - like figure who helps the triplets navigate through the web of secrets. Additionally, there could be siblings or relatives who are either in on the secrets or are completely oblivious to them.
I'm not sure specifically as there could be many novels with this name or concept. It might be about the secrets involving triplets, perhaps their special bond, some mystery related to their birth or a family secret that the triplets are part of.
The triplets themselves are usually the main characters. They could be given names like James, Lily, and Sirius as a nod to the original series' characters. Often, they'll have traits that set them apart, like one being extremely intelligent, another very brave, and the third having a heart of gold.
Obviously, Bella is one of the main characters. Since it's about her having triplets, she'll be central to the story, dealing with all the new challenges.
They could be the children of Luke Skywalker. Maybe he had triplets in secret, and they inherit his strong connection to the Force. Each of them could have different personalities, like one being very brave and impulsive, one being more cautious and intellectual, and the other being empathetic and diplomatic.
Obviously, Harry Potter is one of the main characters. He's the father of the triplets. Hermione and Ron would probably also be important characters, as they are Harry's closest friends and would likely be involved in the triplets' lives, perhaps as godparents or just as trusted advisors.
Obviously, the triplets are the main characters. Since it's the billionaire's triplets, they must be the focus of the story.
The main characters are the seven members of the Secret 7 club.
There might be a female lead who is at the center of the secrets. For example, she could be a woman with a past she is trying to hide, and her actions and relationships are shaped by this need to keep things in secret.
The two main characters in 'Secret Window, Secret Garden' are Mort Rainey and John Shooter. Mort Rainey is a writer living his life when suddenly he is faced with this strange situation. John Shooter, who appears out of nowhere, is the catalyst for all the chaos in Mort's life. Mort is the character we follow through his psychological journey as he tries to figure out what's going on with Shooter's claims. Shooter is the mysterious and somewhat threatening figure that forces Mort to re - evaluate his own work and sanity.
In 'the secret billionaire novel', the main character is surely the secret billionaire. There may be a confidant, someone the billionaire trusts with their secret or at least part of it. There could also be antagonists, like those who are trying to expose the billionaire's secret for their own gain. Additionally, there might be ordinary people with whom the billionaire forms relationships, which are influenced by the hidden wealth.