Aethonan

Aethonan was a female Winged Horse, specifically a chestnut mare, who belonged to Seraphina Picquery, the President of the Magical Congress of the United States of America (MACUSA) during the 1920s. She served as a symbol of the authority and grandeur of the American wizarding government, drawing President Picquery's chariot. (Fantastic Beasts and Where to Find Them: The Original Screenplay)

In December 1926, Aethonan appeared at the MACUSA headquarters, pulling a grand chariot that carried President Picquery. Picquery arrived to witness the scheduled execution of Newt Scamander and Porpentina Goldstein. Aethonan is seen standing majestically with the chariot while Picquery oversees the proceedings in the Death Cell. (Fantastic Beasts and Where to Find Them: The Original Screenplay)

Aethonan is a magnificent chestnut mare with large, powerful wings, characteristic of her species. (Fantastic Beasts and Where to Find Them: The Original Screenplay) No specific details about her personality are provided in the source material, though her on-screen demeanor appears calm and stately.

As a Winged Horse, Aethonan's primary ability is flight. She is strong enough to pull a chariot through the air, carrying at least one passenger. (Fantastic Beasts and Where to Find Them: The Original Screenplay)

Aethonan's primary relationship was with her owner, Seraphina Picquery. She served President Picquery faithfully, acting as both transportation and a symbol of her high office within the American wizarding community. (Fantastic Beasts and Where to Find Them: The Original Screenplay)

The name Aethonan is likely a variant of Aethon (Ancient Greek: Αἴθων), which translates to “burning,” “blazing,” or “shining.” In Greek mythology, Aethon was one of the four immortal horses that pulled the chariot of the sun god, Helios. This classical allusion reinforces the majestic and powerful nature of the magical creature, linking her to a divine mode of transport befitting a leader like President Picquery.

Aethonan is a creature introduced in the film Fantastic Beasts and Where to Find Them and its corresponding published screenplay. She does not appear in the original seven Harry Potter novels by J.K. Rowling. The name and details of the creature are confirmed in the screenplay. (Fantastic Beasts and Where to Find Them: The Original Screenplay)