Van Hohenheim

Van Hohenheim (ヴァン・ホーエンハイム, Van Hōenhaimu) - also known in the 2003 anime series as Hohenheim of Light (光のホーエンハイム, Hikari no Hōenhaimu) - is a deceptively ancient and extremely powerful alchemist as well as the estranged father of Edward and Alphonse Elric. Despite disappearing suddenly during their infancy, Hohenheim returns during the course of the series in order to right the wrongs of his mysterious past.
Hohenhiem is unrivaled in his skills of alchemy. Being a living Philosopher's Stone with over half a million denizens comprising of it, he can tramsute without circles or forming one with his hands. However, because he had an understanfing with each one of the souls in the Stone, his alchemy was more powerful than Father's.
Although not being a Philosopher's Stone, he is still unmatched in the 2003 anime. He was given the name "Hohenhiem of Light" for being able to use alchemy to create soldiers of light similar to the armor Alphonse was bonded to as shown in his fight with Dante.

Though Hohenheim's devotion to alchemy and the mysterious circumstances under which he was witnessed abandoning his young wife and infant sons gave the man the impression of being cold, he is an unexpectedly softhearted, kindly individual who is quick to give compliments but loath to accept them. Hohenheim appears to care very little for his own well-being, much less his dignity, and is therefore often put in situations that give him the impression of being goofy or eccentric, adding greatly to the series' comic relief. Slow to anger and apparently a bit of a pacifist, Van Hohenheim would much rather talk out disputes than fight, frequently doing so even while he himself is under vicious attack. Chief among his personality traits appears to be his hopeless romanticism, given his propensity for spouting sappy lines about his love for Trisha Elric, his readiness to weep openly over her and his charming treatment of women in general. Van Hohenheim lacks the ambition of other, clearly content to take his time dealing with things that do not demand urgency, but in his youth had a hair-trigger temper much like that of his son and became irrationally angry when taunted for his ignorance.