Suparna is a boss that accompanies Garuda in the Adventurer from Another World quest in Final Fantasy XV. Garuda summons Chirada and Suparna in both her Lv.45 and Lv.120 battles. Chirada and Suparna are identical to Garuda and act as distractions as the Lv.120 version of the battle is on a timer and will end if all meteorshards shatter.
Suparna attacks with punches and kicks, rather than with wind magic like the real Garuda. She is not weak to one-handed swords, unlike the real one, instead being weak to greatswords. When defeated, she fades away and scatters her angelic plumes about. She is much weaker than the real Garuda. If Chirada and Suparna are defeated, Garuda may resummon them, especially in the Lv.120 battle that goes on longer.
It may be better to ignore Chirada and Suparna and focus on the real Garuda as defeating her ends the battle.
Suparna is one of many names attributed to Garuda. Garuda is a large, birdlike creature that appears in both Hinduism and Buddhism. It serves as Lord Vishnu's mount and is the Hindu name for the constellation Aquila. Contemporary representations of Garuda are the brahminy kite and phoenix.