I don't really need to tell any of you this, but, Hamtaro is one bad ass mother fucker. Many a cute and cuddly cartoon goes trick or treating. Hamtaro made a point to have a Burger King Kid's Meal toy set about going trick or treating. Don't let those chubby cheeks confuse you, that's one hardcore hamster.
You just know they had a giant bonfire and listened to Slayer afterwards.