Trick | Or Treat Scooby-doo!

"But Coco is in the Coolsville Penitentiary," Velma noted, her brain already spinning with theories. "If these are her designs, who is wearing them? Or better yet, who is controlling them?"

Fred was busy waxing the Mystery Machine, Daphne was perfecting her latest outfit, and Velma was deep into a book, occasionally sighing at the lack of a good puzzle. Meanwhile, Shaggy and Scooby-Doo were exactly where they wanted to be—safe in the kitchen, surrounded by a mountain of "Halloween snacks" that would make a buffet look like a light appetizer.

It was Halloween night in Coolsville, but for the Mystery Inc. gang, the "spooky" atmosphere felt unusually quiet. After recently capturing the infamous costume designer Coco Diablo, the mastermind behind many of their old foes' disguises, the group was struggling with an unfamiliar problem: boredom. Trick or Treat Scooby-Doo!

"Like, this is the life, Scoob," Shaggy said, stacking three sandwiches on top of each other. "No ghosts, no ghouls, just us and a giant bowl of popcorn."

Realizing they needed an expert on criminal costumes, the gang headed to the prison to interview Coco. To their surprise, Coco—who Velma couldn't help but admire for her brilliant, albeit villainous, mind—offered to help them, provided she could "consult" from outside her cell. "But Coco is in the Coolsville Penitentiary," Velma

The trap was set. As the robotic doppelgängers closed in, Fred triggered a series of elaborate Rube Goldberg-style contraptions involving a giant popcorn machine and a series of mirrors. The robots were lured into a trap and unmasked, revealing they were being remote-controlled by the prison warden, who had been using Coco’s technology to create "threats" so he could look like a hero.

Daphne noticed a small, high-tech tag left on the ground where the Ghost Diver had stood. "Look at this. It’s a specialized fiber... the same kind Coco Diablo uses for her high-end designs." Meanwhile, Shaggy and Scooby-Doo were exactly where they

Suddenly, a strange green light flickered outside the window. A low, haunting moan echoed through the house, followed by a familiar, robotic clanking sound.