He is then still seen working around the ranch; he will greet Marston as he walks by.
Later on, he is seen taking care of the newly broken wild horses, moving them into the corral when Marston and Bonnie return to the Ranch after breaking a few more. Before they got back, Amos told Drew MacFarlane about some horses he had seen outside Armadillo.
His first speaking appearance is in the mission A Tempest Looms. The storm has begun and he is getting the horses inside the barn for safety. Bonnie arrives and Amos tells her that the horses and the chickens are secure. Bonnie says that she is worried about the cow herd and they need to get them back. Amos says that it is too dangerous and that the men will all die. Bonnie calls him a 'stupid man', saying that they will all die if they are left without a livelihood. Marston agrees with Bonnie and tells him to round up his men.
After the barn has caught on fire and Marston saves the horses, Amos comes to see John to give him his gratitude.
He is not seen again until John and his wife Abigail Marston deliver some corn to the Ranch after their whole supply was eaten by pests. He is only seen greeting Bonnie after the wagon has left.
Amos is also an avid Poker player, attending a poker game with his fellow ranch hands and other ranch residents and visitors after his ranching duties are complete. Marston can play alongside him if he so chooses. As with all poker players, getting caught cheating will cause Amos to challenge Marston to a duel.
Closely examining the cutscene he appears in during Exodus in America, although no dialogue can be heard he seems to urge Bonnie to leave John presuming that he is dead, then carries John to the wagon when Bonnie tells him to.