No playable Fatui Harbingers will be in Natlan's future updates. The earliest Capitano can debut in Genshin Impact is during Version 5.7, and they're expected to be a 5-star Cryo Sword character.

Genshin Impact's story is getting more intense ... Recent leaks via Project ENKA suggest that three of the top Harbingers, Columbina, Capitano, and Dottore, will be in Natlan.