Armin's grandfather (Anime)

Armin's grandfather (アルミンの祖父) was the grandfather of Armin Arlelt. After the fall of Wall Maria, Mr. Arlelt was killed by the Titans during the failed operation to retake Wall Maria.

Appearance
Armin's grandfather was an older man with a rather youthful face; yet he had a very aged body and hands. He had light brown eyes and shaggy brown hair with a beard and mustache that did not connect around his mouth. He was only ever seen wearing a tattered light brown hat, a faded beige sweater with a brown shirt over it and a green scarf, short gray pants, and shoes.

Personality
Armin's grandfather appeared to be a caring man, taking in his grandson when he was orphaned. He spoke with a calm tone and pitied Eren Jaeger and Mikasa Ackermann after seeing their horrified expressions, stating that whatever they had seen must have been terrible. Armin's grandfather cared for him and his friends, convincing the soldiers distributing food in Wall Rose to give him extra for the children.

History
Before the fall of Wall Maria, Armin's grandfather possessed a book containing illegal information about the world beyond the Walls. He gave this book to his grandson, Armin Arlelt, who showed it to his best friend Eren, kindling his desire to see the outside world.

The Fall of Shiganshina arc
Following the breach of Wall Maria by the Colossal Titan, Armin's grandfather and Armin are among the citizens who board a boat and escape to Wall Rose. Armin's grandfather takes care of Armin and his friends Eren and Mikasa until he is drafted to take part in the Royal Government's mission to try to retake Wall Maria and dies during the reclamation efforts.

Humanity's Comeback arc
During his intimidation, or "rite of passage," from Instructor Keith Sadies, Armin states his name and is insulted by the instructor for it. When Sadies asks him if his parents gave him the name Armin replies that it was given to him by his grandfather.

The Struggle for Trost arc
When Commander Dot Pyxis is giving his orders to the Garrison and cadet soldiers to retake Trost District, he mentions the Royal Government's attempt to retake Wall Maria four years before. When speaking about it, he directly says that it was no more than their way of dealing with being unable to feed the refugees and that by sending them outside of the Walls, they were able to survive within them. He states that all of humanity bears the weight of that sin as Armin listens in the crowd, remembering his tears and last moments with his grandfather.

Trivia

 * Armin's grandfather and Pastor Nick share the same English voice actor.