Marcel Galliard was the older brother of Porco Galliard and a childhood friend of Reiner Braun, Bertholdt Hoover and Annie Leonhart. He was part of the group of Warriors sent by Marley to attack the Walls of Paradis Island in year 845, but his mission was cut short by the sudden appearance of Ymir as a Pure Titan. He possessed the ability to transform into the Jaw Titan.
Appearance: Marcel had short brown hair swept back, large hazel eyes and an upturned nose. On the mission to breach Wall Maria, he dressed in a long jacket with a backpack likely filled with supplies for the long journey away from their hometown. His Titan form was shown to be similar to his brother's, as both were shown to have long hair, a thick beard at its chin, sunken eyes, and a small, agile body.
History: Marcel Galliard was an Eldian born in Marley. He and his brother Porco both became Warrior Candidates and both became frontrunners to inherit one of the Nine Titans. At this time, tension began to grow between Porco and fellow candidate Reiner Braun, who had become a subject of ridicule from Porco for his lackluster performance as a Warrior.
Story: " After traveling through the night, the Warriors camp until sunrise. At this time, Marcel reveals to Reiner that he was not meant to inherit the power of the Titans, and he apologizes for putting his brother's life over Reiner's. Unfortunately, before the matter can be discussed further, a Titan rises up out of the ground and attacks Reiner.
Abilities: As an Eldian Warrior, Marcel had undergone advanced military training in order to prepare him to use the Titan power. He was in good shape and was particularly quick-witted, and his overall abilities were strong enough to make him a Warrior. Marcel had the ability to transform into a 5 meter Titan known as the Jaw Titan.
Source: Marcel Galliard (Anime), available under CC BY-SA 3.0.