|Full name: Nike Lemercier|
|Nicknames: Nike, Princess|
|Hair Color: Orange|
|Eye Color: Green|
|Age: 17-18 Years Old|
Occupation: Princess (Rain Dukedom)
Queen (Sun Kingdom)
|Allegiance: Sun Kingdom, Rain Dukedom|
Voiced by: Maeda Rena 
Nike Lemercier Edit
Nike is the youngest princess of the four princess of the Rain Dukedom. As a child Nike had difficulties summoning the rain and wind so she was often sad. Regardless Nike never gave up on learning. In her family she respects and loves her grandmother the most because she was the one who trained and looked after Nike. As she grew up and trained, she always took the harder path and hurt herself. Even then she never gave up. Her grandmother said "It would hurt her more." when Nike's cousin Kitora asks why does not she just give up on summoning rain. She is clearly the most beloved of the four princess to her grandmother. She is also considered to be the best and most talented as she is the only one who can summon both rain and wind together.
In exchange for autonomy, one of the four princesses of Rain Dukedom was to be sent to the Sun Kingdom to marry their King. The youngest princess, Nike was to be sent after she lost in a game of rock, paper, and scissors against her older sisters. Nike is also very strong, proven when she beat up four of the palace guards. Although, initially distraught by her fate to marry Livius, Nike comes to love and care for the young Sun King.
Optimistic, understanding, and stubborn, but caring Nike quickly gains the people's affection as well as Livius, who clearly loves her. She is said to be more popular than Livius among the people in the Sun Kingdom as she seems to interact with them on a regular basis and helps them out whenever she can. She will also avenge herself, if she believes that she has been done wrong. For example, although Rani originally wanted to kill Nike and almost succeeded in doing so, Nike forgives him, but she also beats him up for carrying out the order of assault on her life. Nike also tends to be a bit clumsy as she occasionally steps on Neil's foot by accident when he helps train her on how to dance.
Although Nike initially treated Livius as a child, she began to see him more as a husband and began to develop romantic feelings for him over the course of the series.
Kara is Nike's older sister. When their grandmother imprisoned Nike, Kara helped Livius escape so he can find Nike despite the risk of going against her grandmother.
Kitra is Nike's cousin-like childhood friend, who was raised with her when his parents died. Although Nike considers him as a close friend and family member, Kitra has romantic feelings for her as he loved her for more than 10 years, but has kept these feelings hidden from her. However, that love can never be as Nike loves Livius and Kitra remained considerate about that.
- Nike's family's ethnic origin is equivalent to that of the Imperial Japanese culture.
- The name of the residents from her country are Japanese.