Lethe (レテ, Rete) is a beast tribe laguz from the cat clan in Fire Emblem: Path of Radiance and Fire Emblem: Radiant Dawn. Fierce and agile, she initially had a deep rooted hatred for all beorc, but after fighting alongside Ike during The Mad King's War, she has since learned to let go of her feelings and has formed many friendships because of it. She is the leader of a small platoon of Gallian soldiers.
She has a younger twin sister named Lyre, and despite their arguments, Lethe's only desire is Lyre's protection. Lethe will always try to protect Lyre, even if it means having to be mean to her.
Lethe is known as one of the harshest characters in the Tellius series. She has a sharp tongue and a dislike for Beorc that seems to last through the whole game. Her honor and respect for her duty leads her to be an extremely intimidating figure.