The cast of NBC's Superstore covered everything from Scooby-Doo's Fred to avocados and Indiana Jones.
Girlfriends Toni Topaz and Cheryl Blossom on Riverdale dressed up as Batman foes Harley Quinn and Poison Ivy.
Meanwhile, Archie Andrews and Mad Dog had more original takes on superhero costumes.
No, those aren't costumes, it's just the cops of 9-1-1 responding to a Halloween party emergency.
Perfect Harmony's Second First Church of the Cumberlands parish sets up for a haunted holy night dressed as everything from Hercules to a hunter.
While their choir director (Bradley Whitford) dances away dressed as what looks like a Chippendale dancer.
Dre (Anthony Anderson) looks on as his family dress up as late-'90s/early-aughts icons including The Nutty Professor, an L.A. Laker, "Single Ladies" Beyoncé, and Queen Latifah.
Dre, Bow (Tracee Ellis Ross), and Devante (Berlin and August Gross) dress up as the 2019 versions of Aladdin, Princess Jasmine, and Genie.
While one Otto child opts for American hero Amelia Earhart, the other dresses up as Marvel hero Black Widow.
Doris (Ali Wong) brings some scares to Connecticut dressed as a red devil.
Manny (Rico Rodriguez) spends the show's last Halloween in a detailed, likely esoteric costume.
And their daughter Lily (Aubrey Anderson-Emmons), prepares for a Halloween party, dressed as a cheerleader.
For one last scare, Phil Dunphy (Ty Burrell) dons an ax on his chest.
While it's unclear what costume (if any) Jessica Huang is wearing (Punky Brewster? Chucky?), what is clear is that she's in for a scare.
The kids of Single Parents dress as their single parents.
Baby Jack, on the other hand, is dressed as Wilson from Cast Away.
The Bless This Mess characters go all over the map.
And Brandon (Langston Kerman) helps bring the Halloween party scares.
Cousins Mary and Mark Conner (Jayden Rey and Ames McNamara) dress up as Princess Tiana and David Bowie.
Sisters Darlene and Becky (Alicia Goranson and Sara Gilbert) become twins for Halloween.
Under the large white beard and puffed-up chest is Dan Conner (John Goodman).
Dr. Jo Karev (Camilla Luddington) shows up at the hospital covered in (hopefully fake) blood.
Coach Rick (Bryan Callen) and family get creative as Forrest Gump, Jenny, and a box of chocolates.
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