Al in human form. Al with soul sealed in armor.

Voice Actor: Aaron Dismuke
Age: Episodes vary but end at age 10

It's hard to believe that a large suit of armor can harbor the innocence of a 10 year old child, but that's exactly what happened to Alphonse Elric. As explained in Edward's character summary, the armor carries Al's soul after a failed attempt at the human transmutation of their mother.

Al is only one year younger than his brother, Ed, but his kindness and maturity make him seem much older. Al gets pleasure from helping others whether alchemy is used or not. Unlike Ed, Alphonse longs to see his father and holds no grudge. It's the boy's trust in people that can bring out the best in even the worst offenders.

When the boys set out to become State Alchemists, Al passed the written alchemy exam just as Ed did. Unfortunately, the position required a physical, which eliminated Al's chances. That did not stop the boy from accompanying his older sibling on all of the military assignments. With each passing day, the two hope to get closer to creating the philosopher stone and regaining their lost bodies. Do they succeed???...................(So not to spoil it, you'll just have to watch and find out!!).