Eren is Shingeki no Kyojin's protagonist. His childhood friend, 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.

Note: Eren Yeager is the official English translation by Kodansha.