Grimm has cast the parents of Silas Weir Mitchell's Monroe, TV Line reports.
Dee Wallace (E.T. the Extraterrestrial) and Chris Mulkey (Friday Night Lights) will play the Wesen’s mom and dad, Alice and Bart.
Expect for Alice and Bart to appear later in season 3.
'Grimm' airs every Friday at 9PM ET on NBC.