Age: 18 Angel Aaltonen is a great weaponsmith, also being called as "King of Inventions" (発明王), from Shiganshina District and the person credited for the creation of the Three Dimensional Maneuver Gear, an invaluable asset in fighting the Titans. He's also the one who found out about Titans weak point in the nape.
Son of the Elena, the leader of the Titan worshiping cult and the widow of the Squad leader Heath. Found by Carlo Pikel and Solm Hume of the scouting legion, after being born from Elena's dead body who had been eaten by a Titan.
Sharle is the daughter of Dario Inocencio, and the younger sister of Xavi.
Eren's mother. She's eaten alive in the second chapter. Note: Carla Yeager is the official English translation by Kodansha.
Iczer One is a gynoid created by the Cthulhu (also known as Cthulwulf), to be their guardian. However, when the Cthulhu were taken over by Big Gold, Iczer One was jettisoned. She arrived on Earth and somehow got wind of the coming invasion by the Cthulhu, now under Big Gold's command. She was therefore forced to defend the Earth against those she was created to protect. To do this, she needed a partner to help her use the Iczer Robo, a giant fighting mecha which is somehow connected to her (a connection so profound, that when Iczer Robo's arm was cut off, Iczer One lost the use of her own, corresponding arm).
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 is Shingeki no Kyojin's protagonist. His adoptive sister, Mikasa, notes on numerous occasions that he acts on impulse without thinking things through, and she often pulls/carries/throws him when he starts fighting with others to protect him from himself. Along with Mikasa, he tends to spend his free time with their mutual friend, Armin. His father is a doctor (whom is well respected by Hannes and potentially many more) whilst his mother is a housewife. When Eren was a child, he saved Mikasa from being sold off when a visit to her home with his father. Three men—killers of her parents—were in her house, and he killed two of them—one by slitting his throat and the other by charging at with a quickly assembled spear. Mikasa herself killed the third man after Eren urged her to fight whilst the man strangled Eren. After this, he gave Mikasa his scarf and Eren's father adopted Mikasa into their family. Later, when the Colossal Titan broke through Wall Maria the debris from this attack scattered and hurtled towards his home. He could only watch on as his mother—trapped under the rubble of their house—was eaten by a titan. This event lit the fire of revenge within Eren that he would kill every giant and not live a life cowering in fear. Sometime after this—before the time skip that jumped a few years ahead, to when he became a soldier—his father injected him with something. It's unknown what at this time but it turns out, because of the injection, Eren can utilize the ability to transform into a titan himself (which explains how his limbs were able to regenerate) with side effects of a high fever and massive stamina drain. Eren has a special titan power called the "Co-ordinates", by which he can direct abnormal titans to attack elsewhere. Note: Eren Yeager is the official English translation by Kodansha.