In the 2003 anime, he is merely the Führer's timid adopted child, appearing late in the series.
On his tenth birthday, young Selim receives a model train and discovers the skull that constitutes Pride's remains and is trusted by his father with guarding it, calling it his treasure. Delighted, he gladly takes the responsibility in order to make his father proud of him. When the Bradleys hear a faint thud coming from their cellar, King Bradley has his guards send his wife and son to the command center for their safety. On the way, the car carrying Selim and his mother is hit by Lt. Frank Archer, knocking the driver and Mrs. Bradley unconscious. Selim, worried about his father and wanting to make sure that his secret treasure is safe, leaves the safety of the car and heads back to his home. After retrieving his father's treasure and putting it in his bag, Selim accidentally wanders onto the scene of Bradley and Roy Mustang's fight. As a Homunculus, King Bradley is severely weakened by the proximity of his human remains, allowing Mustang to gain the upper hand and remove the sword piercing his shoulder. In a fit of rage, the Führer breaks his own son's neck on the spot, psychotically saying that all of humanity is worthless, even his own son.
After using the skull to kill the Homunculus, Mustang picks up Selim and carries him outside the burning manor. It is actually unknown if Selim really died or just went unconscious, though it was most often assumed that he was killed by Bradley.
- Selim Bradley's character design slightly resembles Suan, a character from Arakawa Hiromu's Shanghai Youma Kikai, the discontinued manga series Arakawa wrote earlier before Fullmetal Alchemist.
- Selim's name comes from the Ottoman Sultan's name Selim I.
- The reason why Selim Bradley was fully human in the 2003 anime was that his status as a Homunculus was not officially revealed at the time in the manga during the production of the first anime. However, Pride's voice was first heard in the chapter that was released shortly before the final episode of the 2003 anime was aired.