They run like Rudolph during take-off because they’re guilty as charged with robbing kids of sugary treats and worse! They’re going to need a good scolding.
Just like any other enemy, they carry around a bunch of Christmas Sweets. The streets are crowded with these stinkers like a plague of vermin at a family dinner.
Demolishers have been transformed into giant ice-crystalized Uncle Snows that carry enormous amounts of Christmas Sweets. Do not get into a direct snowball confrontation with them. Be smarter than that.