Sammanar

Potentate Sammanar, They-Who-Walk-Unseen, is an Archfey of the Feywild, keeper of the Sun's Shadow, and Master of the Unseelie Court.

Background
Sammanar is one of five Archfey who has been identified by the Arcana Pansophical. They are Master of the Unseelie Court, and their title of "potentate" indicates that they are a ruler. Sammanar is also known as They-Who-Walk-Unseen and is keeper of the Sun's Shadow, their domain within the Feywild.

Campaign 1: Vox Machina
Sammanar is possibly alluded to in Campaign 1. During Vox Machina's one-year break, Keyleth, Vax'ildan, Vex'ahlia, Pike Trickfoot, and Taryon Darrington visited the Feywild and, unaware of the true dangers of being seen, snuck into a performance of the Royal Troupe of the Unseelie Court. They successfully avoided discovery and, after the performance ended, saw an "entity" step back into a doorway.

Campaign 3: Bells Hells
By the events of Campaign 3, Sammar was apparently searching for the Moontide Crown and sought the destruction of the Calloway family. Zathuda spoke with his agent Dusk, who was looking for the crown and the Calloways in Exandria, and warned them that Sammanar was becoming impatient.

Appearances and mentions

 * Campaign 3: Bells Hells
 * Campaign 3: Bells Hells
 * Campaign 3: Bells Hells

Trivia

 * The ruler of the Unseelie Court in the Forgotten Realms is the Queen of Air and Darkness, who has no physical form and is simply felt as a presence.