Warning: spoilers ahead for The Walking Dead: Dead City episode 1.The Walking Dead: Dead City's main villain is the Croat, played by Željko Ivanek, and because the antagonist is a former Savior, it is only natural to ponder whether this slippery customer ever appeared in the main The Walking Dead TV show. When Jeffrey Dean Morgan's Negan first arrived in The Walking Dead, he brought a literal army of Saviors with him. Some of these lackeys received ample screen time, like Steven Ogg's Simon, others became recurring protagonists, such as Austin Amelio's Dwight, and others simply blended into the background.

https://screenrant.com/was-croat-in-walking-dead-villain-saviors/