Joel was born with heterochromia, resulting in one amber-colored and one turquoise-colored eye. This is a common feature of people from Ilgatto due to the magical flows in the land there.
Originally from the Ilgatto region of Gedonelune, as a child with the spellsinger gift, Joel was disguised and raised as a girl named June for the first eight years of his life, to protect him from being targeted by Leanan-Sidhe, an evil fairy that tempted wizards to trade their magic for artistic ability. As a result of being disguised such, Joel escaped the fairy's notice.
Joel's spellsinger father worked to subdue dangerous magical beasts in various regions of Gedonelune, and they eventually moved to Reitz, Liz Hart (MC)'s home village. While disguised as June, Joel met, befriended, and fell in love with MC. The two became inseparable friends, promising to one day attend Gedonelune Royal Magic Academy together. When MC's parents were lost to the epidemic, Joel made her a promise that he would never leave her. Sadly, when Joel's father's work in Reitz was completed, they were torn apart. The day before he left, a distraught Joel removed MC's memories of June out of love, to spare her the emotional suffering of his abandoning her.
Nine years later, Joel enrolled in Gedonelune Royal Magic Academy, and became known as a prodigy spellsinger. There, he waited for MC, hoping that one day she, too, would arrive and that they would be reunited. One year after he enrolls, she finally appears.
Joel is a member of class Vir Ingeniosus, a class reserved for gifted wizards with rare abilities.
Joel's defining characteristic is his brutal honesty, often to the point of harshness. His inability to tell white lies puts him at odds with Eress, although by the end of the route they get along. Otherwise, he is fairly calm and confident but aloof, and not particularly sociable. Amelia describes him as giving off a "perfectionist vibe" and seeming "hard to approach".
As an adult, he remains deeply devoted to MC's well-being and safety, to the point of often making decisions that remove her ability to contribute to a task for fear of putting her in danger. He is incredibly protective of her, and takes the responsibility of her protection very seriously. While he does tease her for her somewhat mediocre magical abilities, he is also quick to give her credit for her good work.
In Day 12 of his route, Joel admitted to be afraid of heights, which is why he does not enjoy climbing trees.
Joel was born to a family of spellsingers, wizards that manipulate magic through song rather than wands. Like his father, Joel's primary abilities come from his gift as a spellsinger. He is able to command and manipulate magic through songs.
Spellsinging lyrics can be a mix of Latin with other languages. Joel has been shown to perform some of the following spells: Summoning (e.g. rain and flowers), Memory modification, Preservation spell (used on a Fairy Flower) etc.
- Joel was confirmed to have Liz Hart same age, however, their official age was not revealed, being approximately 18 years old.
- In Joel's route, Liz's parents died 10 years before her enrollment contradicting the Prologue that stated that her parents died 3 years before it.
- Joel, Mel and Alfonse share similar hobby of collecting plants.