Udo was an Eldian Warrior candidate working for the Marley government. Before his death, he was a candidate to inherit the Armored Titan power.
Udo was a boy of average height and build, though he was easily the tallest and heaviest of the Warrior candidates, with shaggy black hair and dark eyes which he wore oval-shaped goggles over in place of glasses. Like his fellow Warrior candidates, he wore the standard Marleyan soldier uniform consisting of a light jacket and pants, supply packs on the hip, suspender straps, a hard hat with a stripe around it, and tall combat boots. As an Eldian, his uniform was different from that of the Marleyans, as his shirt collar has a small badge with the Eldian star instead of a small clip and his hat has a white stripe with the Eldian star on it instead of a pure black stripe. As is law in Marley, Udo also wore the Eldian armband as all his family and ancestors residing there do as well.
Udo was not the most secure soldier nor did he possess a very level head. Like his other Warrior candidates, he was trained to aid the wounded and cared enough to come to Falco Grice's aid, but his shaky nature sometimes causes him to neglect those he is treating. While he was not an excelling soldier, he possessed some margin of skill to have survived for four years in the Marley Mid-East War, he also seemed to a be knoweldgeabe about at least one foreign language as he was able to comprehend and interpret the sayings of the wounded Mid-East Allied Forces's soldier.
Appearance: Udo was a boy of average height and build, though he was easily the tallest and heaviest of the Warrior candidates, with shaggy black hair and dark eyes which he wore oval-shaped goggles over in place of glasses. Like his fellow Warrior candidates, he wore the standard Marleyan soldier uniform consisting of a light jacket and pants, supply packs on the hip, suspender straps, a hard hat with a stripe around it, and tall combat boots.
Personality: Udo was not the most secure soldier nor did he possess a very level head. Like his other Warrior candidates, he was trained to aid the wounded and cared enough to come to Falco Grice's aid, but his shaky nature sometimes causes him to neglect those he is treating.
History: Udo and his family used to live in a foreign country before being moved to Marley, undergoing hatred worse than Marleyan hostility.
Udo in the story: Udo and his fellow Warrior candidates participate in the Marley Mid-East War. When an injured Falco Grice is brought back to the trench by his brother Colt Grice, Udo and the other Warrior candidates rush to his aid and begin treating his injuries and bandaging his wounds. During this time, Udo begins to panic in fear of their military failing and wraps Falco's bandages too tightly causing, Gabi Braun to scold him.
Source: Attack on Titan Wiki, available under CC BY-SA 3.0.