Sphinx

Sphinxes are a race of intelligent, immortal magical beasts. A sphinx guards in sacred isolation the secrets and treasures of the gods. Its great wings sweep along its flanks, its tawny leonine body rippling with muscle and possessed of forepaws powerful enough to tear a humanoid in half.

Androsphinx
An androsphinx bears the head of a humanoid male on its lion's body. Outwardly gruff and downcast, it often begins conversations with insults or negative observations. Beneath this gruff exterior, however, an androsphinx has a noble heart. It has no wish to lie or deceive, but it doesn't give away information readily, choosing its words as wisely as it guards its secrets.

Gynosphinx
A gynosphinx bears the head of a humanoid female. Many have the regal countenances of worldly queens, but some are marked with wild, leonine features. A gynosphinx's eyes see beyond the present time and place, and penetrate veils of invisibility and magic. Supplicants who look deep into those eyes might find themselves magically displaced, banished to some farflung plane where a difficult trial awaits them.

Androsphinx

 * Damage Immunities: psychic; bludgeoning, piercing, and slashing from non magical weapons.
 * Condition Immunities: The charmed and frightened condition.
 * Senses: Truesight.
 * Languages: Common and Sphinx.
 * Inscrutable: The sphinx is immune to any effect that would sense its emotions or read its thoughts, as well as any divination spell that it refuses.
 * Attacks:
 * Multiattack: The sphinx can make two claw attacks.
 * Claw: The sphnix can make a claw attack.
 * Roar: Sphinxes can emit a magical roar.

Gynosphinx

 * Damage Resistances:Bludgeoning, piercing, and slashing from non magical weapons
 * Damage Immunities: Psychic damage
 * Condition Immunities: The charmed and frightened condition.
 * Inscrutable: The sphinx is immune to any effect that would sense its emotions or read its thoughts, as well as any divination spell that it refuses.
 * Senses: Truesight.
 * Languages: Common and Sphinx.
 * Attacks:
 * Multiattack: The sphinx can make two claw attacks.
 * Claw: The sphnix can make a claw attack.

Known Sphinxes

 * Osysa, a gynosphinx residing beneath the guildhall of the Slayer's Take, and the keeper of the temple to Ioun in Vasselheim.
 * Kamaljiori is the androsphinx mate of Osysa. Vox Machina sought him out and, upon passing his trial, Kamaljiori gifted them one of the Vestiges, Mythcarver, and revealed the names and locations of some other Vestiges.