Leonis Regnum Vieira
| Leonis Regnum Vieira | |
| Aliases | Leo |
| Age | 21 |
| Hair | Parted in Middle, Short, White |
| Eyes | Blue |
| Body | Pale |
| Clothes | Brooch, Capelet, Coat, Cravat, Decorative Belt, Loafers, Trousers |
| Visual novels | Main character - Eternal Winter |
| Voiced by | Josh Portillo |
DescriptionAn old friend (or so he claims) of Lumine's orphanage days. | |