Francisco is a very wise man who loves his family and who has a firm respect for the by-laws and traditions of the Kingdom of Avalor. He also has a perchant for storytelling as noted by his wife when she tells Elena that he's always reminded of a story. He also has knowledge of the Scepter of Light as shown when he tells Luisa "It's never glowed like that before." As revealed in "Model Sister", Francisco believes in placing the Royal Duties before all else. He also values making a good impression during a Royal Visit. As revealed in "Island of Youth", he's a staunch traditionalist. As revealed in "A Day to Remember", he loves Dia de los Muertos for the snacks. He is shown to be the most reasonable of his family, as while neither Luisa or Elena could forgive Esteban for causing Shuriki to attack them, Francisco did not let the fact that Esteban had changed for the better slide and found it in his heart to forgive his cousin and looked sad as this sadly did not allow Esteban to be spared of punishment as Elena, Luisa and Naomi outvoted him and sentenced Esteban to exile.
When the evil sorceress Shuriki attacked the Kingdom of Avalor and killed King Raul and Queen Lucia, Alacazar, the Royal Sorcerer, decided to keep the remaining members of the Royal Family safe by casting a spell to place him, his wife Luisa, and his younger granddaughter Princess Isabel inside an Enchanted Painting while his eldest granddaughter Crown Princess Elena faced Shuriki alone to buy him time. Elena and Alacazar succeeded and the three of them were placed inside the painting where they would remain for forty-one years while Elena herself was trapped inside the Amulet of Avalor. Along with Isabel, Luisa, the royals of Enchancia, and the people of Avalor, Francisco joined Elena in ganging up on Shuriki. After Elena broke Shuriki's wand and the sorceress fell down a waterfall, Francisco noticed that the sight disturbed Elena and Sofia, and he told his granddaughter that Shuriki was gone and they won the fight, unaware that Shuriki survived. Francisco told Elena that as the eldest child, Elena is now in charge of the kingdom and that he and Luisa will help her out.
In the series that serves as the special's sequel, Francisco appears as a major character. He is a member of Grand Council of Avalor, alongside Luisa, Naomi, and Esteban. Chosen by his granddaughter for his wisdom. Through the course of the show, Francisco assists Elena in her journey to becoming Queen and is always there to give her friendly advice when she needs it.
During Season 2, upon learning of Shuriki's return, he agrees with Esteban, Naomi, and Luisa with keeping Elena in the Royal Palace under heavy guard from Gabe and the Royal Guards for her own protection.
He is later happy to hear that Isabel is starting her weekly classes at the Avalor Science Academy with Professor Ochoa, but Elena tells him and Luisa out of Isabel's earshot that she's very worried about Isabel being there as many of the students are older than her.
Francisco travels with his family on summer vacation to Nueva Vista, but after returning from the parade held in Elena's honor, Francisco, his wife, Isabel, and Esteban were confronted by Shuriki, Fiero, the Delgados, Cruz, and Vestia, who took them prisoner and locked them up in the tower. Elena soon joins them along with Sirena Crown Princess Marisa, but they are all busted out by Gabe, Mateo, Naomi, and the Jaquins, and attempt to escape back to Avalor City. However, their ship is damaged by Shuriki, and by the time they return to Nueva Vista, they learn that Elena had killed Shuriki once and for all, and Francisco watches as Elena has her traitor cousin locked up for his betrayal, and forges a new alliance with Sirena King Pescoro.