First Appearance: First Intermission 43
Unknown MK Caster: Jeftichew is the unknown Caster hiding behind the GK portal when parson arrives (book 2, Page 60) based on identical eye-color to Sylvia, a former Unaroyal unit, and his similarity in dress and facial hair to Fedor Jeftichew
Real World References
Fedor Jeftichew was a 19th century circus sideshow, the "Dog-faced Boy," who moved to the USA to tour with P.T. Barnum at 16.