Age: 15 Birthday: May 2 Height: 158 cm (5'2") Weight: 54 kg (128 lbs) Affiliations: 104th Trainees Squad, Scouting Legion Graduation Rank: 8th Ranked 8th of the trainee class. Upbeat and naive. Is also extremely dumb for not being able to differentiate left and right. Aims to apply to the scouting legion because he was motivated by Eren. From Ragako District. (Source: Wikipedia)
Age: 15 Birthdate: February 10 Height: 170 cm (5'7") Weight: 68 kg (150 lbs) Position: 104th Trainees Squad, Scouting Legion Graduation rank: 1st Mikasa is Eren's adoptive sister and mutual childhood friend of Armin. Mikasa shares an unbreakable bond with Eren following events in their past, and rushes to protect him whenever he is in danger. Mikasa possesses impressive fighting skill and strength even as a child. As a teen, Mikasa is considered a genius among all the army trainees and is incredibly skilled at combat and agility. She constantly worries for Eren's well-being and lives to protect him. When Mikasa was younger, her parents were murdered and she was taken hostage to be sold into slavery. Eren managed to find her and killed two of the three kidnappers by catching them off guard, despite only being a child. The third kidnapper discovered the scene and began strangling Eren while holding him in the air. Mikasa, trembling, grabbed Eren's knife from the floor. In that split second, Mikasa came to terms with the cruelty of the world, gaining perfect control of her own body and using that strength to kill the kidnapper in a single strike through the heart—killing him to save Eren. In the aftermath of this trauma, Mikasa asked Dr. Jeager where she could possibly go from here. She was cold and had no place left to call home. Eren gave Mikasa his red scarf and Dr. Jeager welcomed her into their family. Because of Eren's heroics and this gesture, she feels she owes her life to the Jeagers. She continues to wear Eren's scarf from that day into adulthood, and they are inseparable.
Age: 15 Birthday: November 3 Height: 163 cm (5'4") Weight: 55 kg (121 lbs) Position: 104th Trainees Squad, Scouting Legion Graduation Rank: Outside the top 10 Eren's best friend, he is physically weak yet emotionally strong. Even though lacking in actual combat, Armin is a genius on theoretical courses and can make plans even under extreme pressure. Even so, Armin kept on thinking that he is weak. He himself does not notice the things he does for Eren and Mikasa, and believes himself to be completely incompetent and hates himself for having to rely of Eren and Mikasa. (Source: Wikipedia) Note: Armin Arlert is the official English translation by Kodansha.
Father of Eren and foster father of Mikasa. He is a renowned doctor who was well respected in the District of Shiganshina after he saved the village from a mysterious viral epidemic by developing vaccines. He also provides a medical house call service to the people of Shiganshina and to various towns in addition to having a network of contacts within the Corps of the Shiganshina district. In the basement of the Yeager family house he hides a secret which he refers to as the "truth" and upon meeting Eren after the fall of the Wall Maria in the year 845, injects him with a series of chemicals and amnesiacs and entrusts him with the key to the "truth", before disappearing. (Source: Wikipedia) Note: Grisha Yeager is the official English translation by Kodansha.
Eren's mother. She's eaten alive in the second chapter. Note: Carla Yeager is the official English translation by Kodansha.
A soldier who saves Eren and Mikasa during the prologue. He owes a debt to the Yeager family. He dies later in the series while trying to get revenge on the titan that killed Eren's mother. (Source: Wikipedia)