Reid Astrea (レイド・アストレア) was the first Sword Saint and a key figure in the sealing of the Witch of Envy 400 years ago.
Reid has long red hair, sky blue eyes, and is mentioned to be a head taller than Subaru with a muscular body. He wears a crimson kimono which he only wears half of, leaving the right side uncovered, a white sarashi around his body, and a black eye patch over his left eye that has an ugly pattern.
Reid is shown to have a very frank and rather crude personality, as Subaru was easily able to imitate his method of speech, and tends to speak in short sentences, frequently ending them with you (オメエ omee). However, he has no interest in titles, stating that he was himself, and others were themselves. He is also lustful, mentioning that he would've had Emilia in bed if he was still alive.
Despite being somewhat frank and abstract, Reid is quite smart. He knows the powers of the Authorities to some extent, as he named himself Hauroy Rallior (ハウロイ・ラリオル) when he faced Ley Batenkaitos in Arc 6. In addition to this, he also has a great amount of knowledge regarding how to fight with the sword. Because of this, he had gained the alias as the "Heavenly Sword".
Great Power: As a former Sword Saint and a key figure in the sealing of Satella, Reid has considerable power. He was easily able to defeat Julius and the Arificial Spirit Echidna and would've defeated Emilia if he didn't let his guard down due to his lust.
Master Swordsman: Reid was known as peak sword-mastery and martial arts of his time. As a testament to his peerless skill Reid was called the "Heavenly Sword".
Equipment: As the first generation Sword Saint, Reid was first one to wield the sword of his namesake, the Dragon Sword Reid (龍剣レイド Ryuuken Reido).
- Despite being a former Sword Saint, Reid didn't have the Divine Protection of the Sword Saint.