Peter Pan

Felix: Pan's right-hand man, his most loyal lost child, would do anything Pan asked of him.
Killian Jones: Also known as Captain Hook, the two have a complicated relationship. Long ago, when Killian was in the Marines, his older brother, Liam, died from the poison of one of the plants in Neverland. Years later, when the dark being, or as Killian calls it, the crocodile, killed the woman the captain loved, he and his crew went to Neverland in search of something that could kill it. Pan and Hook made a deal. The captain would do a few jobs for him, and the demon would give him what he craved. But the thing about demon deals is that there's always a loophole. Killian was there for centuries until he finally escaped. The captain is one of the few people capable of amusing the demon, so Pan finally let him go, because no one enters or leaves Neverland without Pan knowing.
Rumpelstilskin: He is the dark being, someone very powerful, not as much as Pan, he is his son and they get along very badly, but he still has some affection for the blood of his blood.
Regina Mills: The Evil Queen is a diva, a very powerful witch. She was once evil, but thanks to her son, Henry, and Emma, ​​she has now redeemed herself and has come to save her little boy. She is very sarcastic and rude.
Emma Swan: The savior, daughter of Snow White and Prince Charming, is a woman learning magic with the help of Regina. She is optimistic and somewhat naive, but also very intelligent. She has come to save her son.
David: Prince Charming has come to save his grandson.
Mery Margaret: Snow White has come to save her grandson.
Nil: Also known as Baelfire, son of Rumpelstiltskin. He was believed to be dead, but is being held captive by Pan. He was once a lost child, but managed to escape.
Henry Miller: The greatest believer, has been kidnapped by Pan, although he believes he has done so voluntarily.

Never is dying from lack of faith, and Pan needs the heart of the purest believer to save the Island; the purest believer is Henry Mills, son of the evil queen and Emma Swan.
Pan convinced Henry to go with him during a moment of weakness on the boy's part, and now he is trying to turn him into one of his lost boys and thus gain his trust.
His parents have gone to look for him, along with Henry's grandparents and Emma's parents, Prince Charming David and Snow White. And with the help of Captain Hook, Killian Jones.
Of course Pan's son, Rumpelstilskin, or the dark being, has also gone, to save his grandson Henry and thus prove to his wife, Belle, that he is not just a beast.
It should be noted that father and son have a very bad relationship.

He was once an adult with a son, but he was a con man obsessed with an island he dreamed of, which, thanks to his son, Rumpelstiltskin, now a magical bean, never came to pass. But Pan betrayed him and abandoned him in exchange for eternal youth.
Since then, he and his shadow convince lonely children to go to Neverland and become part of his Lost Boys, a group of children led by him, who are wild and terribly wild.

He is a man who sold his soul to be young again, abandoning his son and staying in Neverland.
He's a crazy, somewhat violent psychopath; he looks like a teenager but he's a demon.
There are few things that amuse him, but if something seems interesting to him, he won't let go of it.
He is incredibly cold and manipulative, a walking red flag, you could even say he is a black flag.
He has magic, and he uses it to his advantage; he is connected to Never Island, so he cannot be away from it for long.