A Shrieker is a hoodlum working for the Scarecrow in Scarecrow's Streetgang. While dressed in casual clothes, they wear a Scarecrow Sack over their heads to broadcast their affiliation with the Scarecrow.
- Level 4 Shriekers appear on the East End main street terrorizing citizens.
- Level 5 Shriekers appear outside Crime Alley fighting the GCPD.
- Level 5 Shriekers appear at the East End Free Clinic assembling wind fans to blow Fear Gas into the clinic.