Headscratchers / Trick or Treat Scooby-Doo!

• The cat-villain at the start turned out to be a human in disguise like usual. But why did she fixate on chasing the laser pointer like a real cat?
  • Rule of Funny.
• How does arresting Coco Diablo stop criminals in Coolsville? Wouldn’t any potential criminals go look for costumes somewhere else or make their own?
  • Only Diablo's costumes are top quality and Latex Perfection?
• Why do the escaped inmates decide to steal children’s candy?
  • Because that is how evil they are!
  • It's possible that the excitement of escaping prison has them hopped up on adrenaline to the point where they're just committing random crimes for no reason.