Guest Stars Joe Keery as Steve Harrington Noah Schnapp as Will Byers Joe Chrest as Ted Wheeler Rob Morgan as Officer Calvin Powell John Reynolds as Officer Phil Callahan Mark Steger as The Monster Ross Partridge as Lonnie Byers Co Starring Randall P. Havens as Mr. Scott Clarke Susan Shalhoub Larkin as Florence Tobias Jelinek as Lead Agent Robert Walker-Branchaud as Agent Repairman Hugh Holub as Scientist Tony Vaughn as Principal Coleman Charles Lawlor as Mr. Donald Melvald Pete Burris as Hawkins Head of Security Andrew Benator as Elevator Scientist Jerri Tubbs voices Diane Hopper Kaylee Glover as Jennifer Hayes Bill Eudaly as Pastor Charles Andre Pushkin as Russian Man
