Other known Aquarius
Rem & Ram - Re:Zero
Mikasa Ackerman - Attack on Titan
Tsuyu Asui - My Hero Academia
Lacus Clyne - Gundam Seed
Sailor Uranus - Sailor Moon
Akari Mizunashi - Aria the Natural
Vega - Street Fighter II
Mylene Flare Jenius - Macross 7
Haruhi Fujioka - Ouran High School Host Club
Lenalee Lee - D Gray-man
Serena - Pokemon
Nefeltari Vivi - One Piece
Charlotte E. Yeager - Strike Witches
Di Gi Charat - Di Gi Charat
Mayuri Shiina - Stein's Gate
Aerith Gainsborough - Final Fantasy VII
Luka Megurine - Vocaloid
Ban - Seven Deadly Sins
Mai Kawasumi - Kanon
Tetsuya Kuroko - Kuroko no Basket

Aquarius tend to be the most innovative, progressive, rebellious, and humanitarian, it's no coincidence that Nico Robin is in position where she had to flee her home because of her ability to read poneglyphs in order to discover the world's lost history, something the world government is desperate to stop, with the current chapters reeling from the Strawhats triumph against Kaidou and with Nico Robin's history with the revolutionaries along with Luffy's reveal of how much he despises the World Government, Nico Robin is easily the most important character in the crew, it'll be a fascinating few years to come.