Braun family

The Braun family (ブラウン家) is an Eldian family residing within Liberio. Reiner Braun, inheritor of the Armored Titan, hails from this family, as well as Gabi who is likely to inherit the Armored Titan.

History
At some point, Karina met a Marleyan man and later gave birth to Reiner. However, unions between Marleyans and Eldians are forbidden, so she had to remain in the internment zone with her son. Karina later revealed his origins to him and wished they were born Marleyans.

This led Reiner to become a Warrior cadet with the goal to gain one of the Nine Titans and make his mother and himself honorary Marleyans. He succeeded in becoming a Warrior, being praised for his loyalty, and inherited of the Armored Titan in 843. Two years later, he took part to the Paradis Island Operation and infiltrated the Walls.

Some time later, Gabi followed her cousin's footsteps and joined the Warriors. Her achievements allowed her to become a serious candidate for the inheritance of the Armored Titan.

Marley arc
As the Marley Mid-East War is coming to an end, the Marley army is fighting at Fort Slava. Gabi, who found an opportunity to prove she deserved to become the next Armored Titan, managed to blow up the armored train, which allowed the Jaw Titan to penetrate easily in the enemy's defenses. As the Armored Titan, Reiner joined the latter and proceed to kill the remaining soldiers.

At the end of the war, Reiner and Gabi go back to Liberio where their relatives are waiting for them. The whole family has dinner and listen to Gabi telling them about the Fort Slava battle. Her parents express their proud and Karina asks about Gabi's chances to inherit of the Armored Titan and Reiner assures she will definitely have it. Karina expresses joy at the idea of having two Warriors in the family then complains about the islanders' existence, which leads the family to ask Reiner about his time in Paradis.