Porco Galliard was an Eldian and the younger brother of Marcel Galliard. He was one of Marley's Warriors and inherited the Jaw Titan from Ymir.
In his human form, Galliard had the appearance of a young man of medium height and slender complexion. He had gray eyes, and his blond hair was in an undercut style which was pushed back. He wore combat trousers and a short coat. He also wore the Eldian armband on his left arm, as required of all Eldians under the authority of Marley. While undercover on Paradis Island, Galliard stole a Garrison uniform to disguise himself as part of the Yeagerists.
Galliard appeared to be a brave figure, using his Titan to leap in the way of bullets and protect his fellow Eldians Gabi and Falco. It is, however, quite possible that Galliard was not acting on bravery and was instead certain of his ability to withstand gunfire with the absence of the anti-Titan artillery, indicating that he has fought on battlefields before. As a dedicated Warrior, he would charge right into the heat of battle, attacking an enemy gunman and crushing him for his people.
Appearance: In his human form, Galliard had the appearance of a young man of medium height and slender complexion. He had gray eyes, and his blond hair was in an undercut style which was pushed back.
Personality: Galliard appeared to be a brave figure, using his Titan to leap in the way of bullets and protect his fellow Eldians Gabi and Falco. It is, however, quite possible that Galliard was not acting on bravery and was instead certain of his ability to withstand gunfire with the absence of the anti-Titan artillery, indicating that he has fought on battlefields before.
History: Some years before the Paradis Island Operation, Galliard was a leading candidate to inherit the Armored Titan. He participated in the selection process along other Eldian children.
Porco Galliard in the story: When the Paradis Island Operation is abandoned in the year 850, Ymir, who had eaten Marcel and stolen the power of the Jaw Titan, is sent back to Marley. Afterward, Galliard is chosen to reclaim the Jaw Titan for Marley. Turning into a Pure Titan, Galliard consumes Ymir and gains the power of the Titans.
Source: Attack on Titan Wiki, available under CC BY-SA 3.0.