Find out how Renard will rise when 'Grimm' heads to the mat. Grab your spandex, Grimm fans! The Wesen are moving their fight into the ring. 'Grimm' Season 5: Who Will Soon Have A Big Secret? 100th Episode Teasers If Supernatural's "Beyond the Mat" didn't satiate your need for monster-tinged wrestling matchups, Grimm will pair a dangerous Wesen ritual with the body-slamming madness of Luchador wrestling during episode 13.