Production
Rodriguez returned as Chavez in the episode "The Grimm Identity", as she revealed on her instagram account. In late August, Carlson Young was cast as Selina Golias, a character forced to hide the survivor of an attack that resulted in her boyfriend's death, resulting in Selina becoming the target of a Wesen "Rat King" who doesn't mind if she becomes collateral damage in a never-ending Wesen feud. In early September, Madeline Brewer was cast as Billie Trump for episodes 6 and 7 of the season.