Ravus Nox Fleuret, the former prince of Tenebrae, feels differently about the Lucian kings than his younger sister, Lunafreya, does.
From the video game Final Fantasy XV
Twins Rosalind Lutece and Robert Lutece are both physicists who are, had been, and will be one of a kind.
From the video game BioShock Infinite
Alfonse and Sharena, the prince and princess of the holy kingdom of Askr, battle against the invading Emblian Empire.
From the video game Fire Emblem Heroes
Link would travel to the end of the world and back for the sake of his little sister, Aryll.
From the videogame The Legend of Zelda: The Wind Waker
Alexia Ashford is a genius (becoming a chief researcher at the Umbrella Corporation at the age of ten) who is idolized by her younger twin brother, Alfred.
From the videogame Resident Evil: Code Veronica
Porom is White Mage who specializes in healing and protection spells, while her arrogant twin brother Porom is a Black Mage who focuses on attack spells. Together, they helped save the world from destruction.
From the videogame Final Fantasy IV
Chris Redfield and his younger sister Claire, both survivors of zombie outbreak incidents, now dedicate their lives to fighting against the spread of Bio Organic Weapons.
From the videogame series Resident Evil
Raine Sage (right) and her little brother Genis support one another in combat.
From the anime adaptation of the videogame series Tales of Symphonia