Prince Antonio is a supporting character in Barbie as The Island Princess. He is Rosella's love interest, and later her husband at the end of the film.
He was voiced by Alessandro Juliani.
While Antonio was exploring one day, he came across Rosella's island. Rosella was a girl who was thrown overboard during a storm 10 years before, and gained amnesia. Her only memories were of the island, and she considered the animals she met there her family. She even learned to talk to animals.
When Antonio and his friend, Fazer, were attacked by crocodiles, Rosella was saved them by telling the crocodiles to leave them alone. Amazed by Rosella's ability to talk to animals, as well as her personality, Antonio quickly took a liking to her. Antonio asked Rosella if she would like to come back to civilization with him to pay back for saving his life, and Rosella agreed. On the boat ride back to Antonio's kingdom, Apollonia, he fell in love with Rosella.
Once they were back in Apollonia, he introduced her to his three younger sisters Rita, Gina, and Sophia, Antonio and Rosella found out that Antonio had been betrothed to Princess Luciana. Luciana is a sweet, polite girl who was able to see that Antonio was really in love with Rosella. Luciana tried to tell her mother, Ariana, that Antonio was not in love with her, but her mother wanted to take over Antonio's kingdom; this would be revenge for Antonio's parents banishing Ariana and her family from the kingdom.
Antonio and Luciana are became a good friends, but they were just not in love with each other. At a ball, Antonio danced with Rosella and asked her to stay in his kingdom with him. Rosella declined the offer, because she thought he and Luciana should be together. Antonio let Rosella leave, and his father told him he had to marry Luciana in two days. Antonio was annoyed with his father pushing him into marriage, and he wrote a letter to Rosella asking her to sail away with him. Tika, one of Rosella's animal friends that accompanied her to Apollonia, was jealous of Rosella and Antonio's love, so she hid the letter.
However, Ariana spread a disease to the animals in Apollonia, planning to blame it on Rosella's animal friends. Rosella was thrown in a dungeon, and Antonio was furious. He begged his father to release Rosella, but his father would only agree with Antonio married Luciana. Antonio reluctantly agreed, and Rosella was freed, but banished from Apollonia. On the way back to her island, there was a storm, so Rosella and her friends were thrown overboard. Rosella regained some memories, such as her full name, as she had thought it was just "Ro". She managed to get back to Apollonia to try and save the animals.
Rosella interrupted Antonio's wedding and told everyone that Ariana had poisoned the animals and was planning to poison everyone at the wedding with the food. King Peter wanted to put her in the dungeon again, but Antonio reminded him of the deal they made. Queen Ariana tried to convince them that Rosella was dangerous, but Luciana finally saw past everything and finally confirmed that what Rosella was saying was true. While Ariana tried to escape after pushing the two teenagers down, so Rosella, Antonio, and Tika went after her. Soon after, Rosella has captured Ariana and she was taken away.
Luciana has told Antonio that they shouldn't be married, and told him that, someday, someone would look at her the way he looks at Rosella. Antonio asked Rosella to marry him and, though she declined at first, she agreed after finding out Luciana would happily accept it. Antonio's father welcomed Rosella into the family, and Rosella told everyone her real name. A wedding guest, Queen Marissa mentioned she had a daughter named Rosella, and she and Rosella reunited after 10 years. Soon, Rosella and Antonio got married and the happy couple sailed off into to the sunset back to the island for the honeymoon.
Antonio is shown to be somewhat self-sacrificing; giving up his happiness and possibly freedom for Rosella to be free. Antonio was known as a young prince who is adventurous and unafraid to follow his heart; he asks Rosella if they can run away together as his parents disapprove of her.
Barbie in the 12 Dancing Princesses
Barbie as the Island Princess
Barbie: Dreamhouse Adventures