Pierro, also known by his codename "The Jester," is the Director of the Fatui and the very first member as well as Harbinger of the organization. He makes his first appearance during Teyvat Chapter Interlude Teaser: A Winter Night's Lazzo alongside his fellow Harbingers. Pierro has the same Primogem-shaped pupils as Dainsleif, Kaeya, and Halfdan, implying that this feature is exclusive to those from Khaenri'ah.