Father

“Father” or “the Dwarf in the flask” is the oldest Homunculus and the progenitor of the Homunculi, creating them directly or indirectly. Arrogant and self-righteous, he deems only power over and ownership of the world, "perfect goodness and being", and "divine order" worthy of his attention, and he sought to become absolutely "superior" to the human race. One of his outward looks bears a striking resemblance to Van Hohenheim. Father" was created from the essence of the Eye (with some of Hohenheim's blood mixed in), and thus Father's shadowy actual form greatly resembles the Eye. "Father" inherited much knowledge from the Eye, and, when it comes to amount, only those of the Eye and Truth exceed his knowledge.