Marcel Galliard is 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. He is 2 years older than his younger brother porco, which makes marcel 22. He is also  a comrade and childhood friend of Reiner Braun, Bertholdt Hoover and Annie Leonhart. He is friendly and is a leader and calm in stressful situations. He possesses the ability to transform into the Jaw Titan. 