People who are awesome and full of amazing powers. Some are short and blonde, others tall and have black hair. Each has their own specific name, such as Fullmetal Alchemist, Edward Elric, Flame Alchemist Roy Mustang, or Armstrong Alchemist Alex Louis Armstrong. They have the skill to use science to create anything, as long as they give up something of equal value.
Man, you're such an alchemists.
You're absolutely fantastic, like an alchemists.