Eren Yeager is a former member of the Survey Corps unit who is introduced as a protagonist of Attack on Titan. He later becomes the antagonist of the series, only to ensure the survival of his friends after the Paradis War ends.
Roy Mustang is the Flame Alchemist and one of the supporting characters of Fullmetal Alchemist/Brotherhood. He is an officer in the Amestrian State Military who is more commonly known as the 'Hero of Ishval Civil War' among the masses.
Sanji is one of the protagonists of One Piece and one of the anime characters with March birthdays. He is the left-hand man of Monkey D. Luffy, the captain of Sanji's pirate crew and the central protagonist of this series.
Marin is one of the main protagonists of My DressUp Darling and one of the anime characters with March birthdays. She is a part-time model and loves to cosplay as anime characters which are made by Gojo, the protagonist of this series.
Fujiwara Chika is the secretary of the Shuchiin Academy student council and one of the protagonists of this Kaguya-sama. She is one of the anime characters with March birthdays.
Koro-sensei or Ryushi Korogane is the antihero of Assassination Classroom and one of the anime characters with March birthdays. He is known for his playful nature as he tries his best to teach his students as much as possible before his body gets destroyed.
Itadori Yuji is one of the main protagonists of Jujutsu Kaisen and one of the anime characters with March birthdays. He is also the host for Sukuna, the main antagonist of the series.
Kuriyama is one of the main protagonists of Beyond the Boundary and a Spirit World Warrior who can manipulate her blood, just like Choso from Jujutsu Kaisen. She is one of the anime characters with March birthdays and an introvert.
Yusuke is the central protagonist of Yu Yu Hakusho and one of the anime characters with March birthdays. He is a spirit detective in the series and tries his best to protect the world from supernatural villains.
Kallen is one of the main protagonists of Code Geass and one of the anime characters with March birthdays. She is a strong-willed person who is very compassionate about her job.