|Age||9 (at time of death)|
|Siblings|| Princess Evestalina
|Other relations||Yata (maternal grandmother)|
From childhood, he was raised to become King of Lumatere. When Isaboe and Balthazar were running from the assassin in the forest, Balthazar chose to hide Isaboe in a burrow and lead the assassin into a trap. Balthazar swore to die defending the royal house of Lumatere. This vow was fulfilled when he sacrificed his life by saving Isaboe from the assassin in the Forest of Lumatere.
On the day of the assassination, Balthazar broke a vase in the palace, and his father was angry with him, so Balthazar died believing that his father was wroth with him.
Balthazar had the looks of his father the King.
Balthazar was the elder brother of Isaboe, the current queen of Lumatere, and also the childhood friend of Finnikin of the Rock and Lucian of the Monts. His parents were King Carles and Queen Tilda; his elder sisters were Evestalina, Rosamund and Jasmina.