Character Name : John Wayne Gacy, Jr.

Original Name : Mark Holton

Gender : Male

Character Name : John Gacy, Sr.

Original Name : Adam Baldwin

Gender : Male

Character Name : Tom Kovacs

Original Name : Charlie Weber

Gender : Male

Character Name : Gretchen

Original Name : Allison Lange

Gender : Female

Character Name : Mother Gacy

Original Name : Edith Jefferson

Gender : Female

Character Name : Kara Gacy

Original Name : Joleen Lutz

Gender : Female

Character Name : Young John Gacy

Original Name : Scott Allen Henry

Gender : Male

Character Name : Dave

Original Name : Kenneth Swartz

Gender : Male

Character Name : Stu

Original Name : Matt Farnsworth

Gender : Male

Character Name : Ray

Original Name : Rick Dean

Gender : Male

Character Name : Ted Boyle

Original Name : Glenn Morshower

Gender : Male

Character Name : Det. Kay

Original Name : John Laughlin

Gender : Male