Spoilers through Fourth Wing. The overview is spoiler free; facts that give away later events stay folded under the book that reveals them.
Cadet in the Riders Quadrant, introduced in Fourth Wing
Liam Mairi is introduced in Fourth Wing, the first book of Rebecca Yarros's Empyrean series. He is a cadet at Basgiath War College, in its Riders Quadrant. Everything else we could confirm about him, his family ties and his dragon, is revealed while you read Fourth Wing, so it stays in the folded section below. Each line there names the independent fan guides, at least two, that list it, with the date we opened them.
Liam first appears in Fourth Wing, book one of the series.
No spoilers Listed by theBookFeed and Esta Pinto (both opened Oct 14, 2026)
Liam is a cadet at Basgiath War College, in its Riders Quadrant.
No spoilers Listed by theBookFeed and Empyrean Riders (both opened Oct 14, 2026)
He grew up as Xaden Riorson's foster brother.
Spoilers through Fourth Wing Listed by theBookFeed and Empyrean Riders (both opened Oct 14, 2026)
Sloane Mairi is his younger sister.
Spoilers through Fourth Wing Listed by theBookFeed, Empyrean Riders and Esta Pinto (all opened Oct 14, 2026)
His dragon is Deigh.
Spoilers through Fourth Wing Listed by theBookFeed, Empyrean Riders and Esta Pinto (all opened Oct 14, 2026)
These facts come from unofficial fan guides, not the author or the publisher. A fact is shown only when two sites with different owners state the same thing; we write every sentence ourselves and quote nothing.