Within moments of meeting him/her/them/it, it is painfully obvious that there is more to Seanchai than meets the eye — especially to the soldier whose insides she turns into flowers. Yet pinpointing exactly what she is becomes impossible for Jaskier, and for fans. There is one moment, however, in which she may reveal her true form, and whether it's real or not, it is almost certainly a reference to some of the franchise's most notorious villains.
After first appearing to Jaskier in his own form, prompting a number of questions for the bard, Seanchai tells him, "I have other faces ... if you prefer." During that pause in her answer, she changes shape from a Jaskier clone to some unknown, hideous monstrosity. It is a tall, thick humanoid, and its head is covered in a bulky, webbed mask. The combination of that shape and that mask strongly resembles the Crones, or Ladies of the Wood, from "The Witcher III," specifically the hulking Brewess.
Brewess and her two sisters may have been referenced on Netflix before, in the form of the Cabin Witch from Season 2 of "The Witcher." The Cabin Witch, Seanchai, and the Crones all share a number of traits, many of which can be traced back to the Slavic folklore figure Baba Yaga. Whether or not Seanchai is revealed to be one of the Crones or not, she is certainly a part of the Netflix series' habit of hinting at their existence.
