Rosé's child

This child is the baby of Rosé. When the military invaded his mother's town, a soldier raped her, and she became pregnant with him. Although, Rose cares for him deeply, not much is known about him. It is unknown who his father is, what his name is, or even if he is a boy or a girl, though it is presumed he's a boy.

He first appears near the end of the 2003 anime. He is a newborn baby wrapped in a blue blanket that is always carried in Rose or Lyra's arms, usually seen sleeping or crying. When it is revealed that Lyra is really Dante, Lyra takes the baby and threatens to feed him to a monster. But he is saved by Ed, and returned to Rose. Near the end, it's noticed how Rose and her baby are probably both tired, since he was caught roughly from a high distance, and how exasperated Rose looked when she tried to calm him.

In the last episode, it shows Rose's baby a few months older in Ed and Al's hometown (possibly just coming for a visit), and showing being able to do more than cry. He learns how to laugh, and how to hold a bottle by himself.

Conqueror of Shamballa
Rose's baby is shown again in the movie. He is about two or three years old and back in his mother's desert town. When the robots invade his town, Rose rushes to his rescue, and holds him close. It is also noticed that Rose has two other children now. A little girl, and another little boy, about the same age as her son. It is unknown where they came from, but that they seem to live with Rose, because in the credits, it shows Rose at her house, swinging the little girl around, while the two boys play together. It is presumed that they were probably orphans that Rose adopted, since they immediately ran to her when they were frightened.

Appearance
Rose's baby resembles a typical person. He has the brown skin, and brown hair, with grayish, blue eyes. It is unknown if his father is or not, if not than he was born looking like his mother. He is very small for his age, and doesn't speak yet. He is seen usually wearing a simple dark green shirt and brown shorts, and usually has bare feet. His hair is very shiny and dark, and sort of floppy. When he's older he has bangs that flop across his forehead.

Trivia

 * Rose's baby has never been given a name
 * As a newborn, he didn't seem to like it when Ed raised his voice. Twice in the anime, when Ed begins to become loud, it seems to startle the baby and he begins to cry
 * It has been noticed that the animators didn't give the baby much of a part. He was probably used only as an object that only cried and needed to be saved all the time. We never see Rose feeding it, changing it, and when the baby is not crying, he's usually just asleep and not making any noise in his mother's arms.
 * As much as Rose loves him, when he's older, he seems to love her back, and when he's older, Rose will probably not tell him how she was raped to have him
 * The baby likes to hold things. In the last episode, he seems to be entertaining himself by holding a piece of bread, and observing it. In the movie, Al shows him a wand-type thing, and he is holding it with interest before showing it to his brother and sister.
 * The baby likes Al a lot. The baby smiled in one of the episodes when Al was playing with him. Al also feeds him a bottle one time, and smiles at him when Mason is playing with him. Al pats him on the head sometimes, and the baby likes it when Al shows him his things.
 * It sort of foreshadows that Rose's 3 children are sort of like Ed, Al, and Winry when they were young, seeing that they're are two boys and one girl, though Rose's biological son is more focused on, and that they are all under the care of one woman.