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)
Thomas Wagner was from Trost District. A member of the 104th Trainees Squad, he first met Eren Yeager while questioning him about the Colossal Titan. Later, he operated the training gear for the Three Dimensional Maneuver Gear during Eren's second attempt at his aptitude test. At Keith Shadis' orders, Thomas exchanged gear with Eren and it was discovered that Eren's gear was defective. After graduating, Thomas planned to join the Scouting Legion. After the second attack of the Colossal Titan, he was assigned to the middle guard along with Eren Yeager and Armin Arlert. Initially tasked with working under the training corps, they eventually were incorporated into the front guard due to the number of titans. Catching the group unaware, a titan lunged at the rooftop they were standing on. The group scattered but unfortunately, Thomas wasn't fast enough. He was caught and swallowed whole, while his teammate, Eren, looked on in terror.
The head of all three divisions of the army. Note: Darius Zackly is the official English translation by Kodansha.
Age: 15 Birthday: April 7 Height: 175 cm (5'8") Weight: 65 kg (140 lbs) Affiliations: Scouting Legion Graduation Rank: 6th Ranked 6th of the trainee class. Extremely pessimistic about the War with the Titans. He ends up leading the people on the supply mission for gas. From the Trost District. Seems like he's amazed by Mikasa's beauty, and thus hating Eren for always being with her. (Source: Wikipedia) Note: Jean Kirstein is the official English translation by Kodansha.
Keith Shardis was the head instructor of 104th Trainees Squad. He seemed to be a friend or have some sort of relationship with Dr. Grisha, as he knew Eren is the son of the doctor and praised Eren for his effort. He is a former Commander of the Survey Corps, and was in command when Wall Maria fell in 845. First Appearance Manga: Ch. 15 "One By One" Anime: Ep. 1 "To You Two Thousand Years Later" (Source: Shingeki no Kyojin Wikia)