Race: Human
Gender: Male
Relatives: Grandmother: Nana
Mother: Brimme
Brother: Yulgar
Brother's wife: Lark
Niece: Aria
Cousin: Adder

Leo was Aria's uncle.

When ghosts started invading Battleon and stealing swords, the Hero asks Aria how the ghost looked like, Aria said it kind of looked like her uncle Leo. When the Hero says why would her uncle attack her, it doesn't make sense. Then Aria says its even less than you think and says uncle Leo died when she was five.