|Relationships:|| Stefania Vaduva Popescu, mother|
3 other unnamed siblings
|TV Show:|| "The Waking Dead"|
"Goodnight, Sweet Grimm"
"The Ungrateful Dead"
When Frau Pech disguised herself as Adalind and arrived for a meeting with his mother, Yanko was waiting in the wings. After Miguel had garroted Frau Pech, Yanko handed Stefania the the knife that she used to cut into her stomach so that her heart could be removed while it was still beating.
Yanko accompanied his mother, Miguel, and Adalind as they searched for an appropriate place to initiate the next phase of the ritual to restore Adalind's Hexenbiest powers. He and Miguel hung back while Adalind performed her part of the ritual, burying Frau Pech's extremities and picking dead flowers.