Bragi is the Norse god of poetry, music, and eloquence, known as Odin's son, a wise figure with runes on his tongue, playing a harp, and welcoming heroes to Valhalla with songs, patronizing poets (skalds), and linked to the word "brag". He is married to Idunn, goddess of youth, and his role involves preserving stories, symbolizing the power of words, and maintaining cultural tradition, often depicted as an elder bard in Valhalla's halls.

Appearance & Characteristics
Wise & Aged: Depicted as an old, bearded figure, embodying wisdom and respect, notes Battle-Merchant.
Musical & Eloquent: Charms with his harp and singing; his tongue is carved with runes, granting him magical speech.
Valhalla Herald: Greets fallen heroes in Odin's hall, recounting their deeds in song, says Battle-Merchant.

Role & Significance
Patron of Poets (Skalds): He is the inspiration for poets, preserving the sagas of gods and heroes.
Symbol of Eloquence: Represents the profound power and honor of language; the word "brag" comes from his name (Old Norse bragr) meaning "poetry" or "the best," notes thetroth.org.

Family & Mythology
Parents: Son of Odin, sometimes with the giantess Gunnlöð, notes Battle-Merchant.
Wife: Idunn, keeper of the apples of youth, connecting poetry with immortality.
Mythological Role: Confronts Loki in Lokasenna, upholding order, and is central to welcoming heroes in poems like Eiríksmál, notes Norse Mythology for Smart People.