Pinako Rockbell

Pinako Rockbell is Winry's grandmother. Pinako took care of Winry after her parents died. She is an extremely skilled mechanist and, along with Winry, she helped create Ed's automail arm and leg. She also is rather short, fighting with Edward about their height consistently. While she may seem strict, she has a genuine care for Ed, Al, and Winry and would do anything for them.

In the Anime
Pinako Rockbell makes only minor appearances throughout the series, usually accompanied by Winry, with whom she resides in their home in Resembool.

In the Manga
In the manga, she plays a larger role, appearing whenever the Elric brothers or Hohenheim comes to visit. She first appeared in Chapter 9 of the manga, when Ed and Major Armstrong came to visit, and she and Ed immediately got into an argument about their height. In later chapters she makes the most prominent appearance when Hohenheim came to visit, and then when Ed decided to dig up the remains of their failed transmutation, and was saddened to watch Ed come to the realization that the corpse did not resemble his mother in any way.

Trivia

 * In an omake strip, Hiromu Arakawa revealed that Pinako hides Nattō beans in her hair, although this is probably not to be taken seriously and might have been only intended as a joke.
 * It was revealed in volume 5, that she was feared by an automail engineer named Dominic, and was known as 'The Pantheress of Resembool'. (much to the shock of Ed, Winry, and Al)