If a dog is a man's best friend, and Robin is Batman's number one sidekick, then this duo will easily keep crime off the streets on Halloween night. iVillager mvthomas sent us this picture, along with a warning: "Ahh...the Dynamic Duo at their best! Look out, evildoers — the Dark Knight and Boy Wonder are coming to get ya!"

More on Halloween

• Hooray for Halloween

• Babies, Toddlers, & Kids Costumes

• Tweens & Teens Costumes

• 10 Last-Minute Costume Ideas

• Halloween Safety Tips

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