One of the graduates from the 104th Training Corps. During the invasion of Trost in the year 850, he was part of the squad including Jean and Mikasa whose Maneuvering Gears start to run out of propulsion fuel. As his fuel finally depletes he becomes surrounded by a group of Titans and is killed. Jean, who was in charge of the squad, capitalized on the opportunity and used him as bait to distract the Titans while the rest of the squad made their way back to the Headquarters to resupply. (Source: Wikipedia)
Mikasa's father. First Appearance Anime: Ep. 6
Mikasa's mother. First Appearance Anime: Ep. 6
One of the graduates from the 104th Training Corps. He was a part of the 34th squad sent to support the rear vanguard during the invasion of Trost. He was killed after the squad was ambushed by a group of Titans. First Appearance Anime: Ep. 5 (Source: Wikipedia)
Member of Scouting Legion that fought the Castle Utgard's battle.
Chief of the Military Police. Note: Nile Dok is the official English translation by Kodansha.
Dimo Reeves is a merchant that leads the company that's named after him. He's stationed in Trost District. After the Battle of Trost, his company was assigned a mission to kidnap Eren and Historia by the Military Police Brigade. (Source: shingekinokyojin.wikia)