The hamburger is a tough character. He weighs about a pound, and his secret weapon is this toppings. During one battle, the hamburger threw pickles until the other fighter gave up. The hot dog has unique strategies too. He throws chili on the ground to trip other fighters. These techniques won't help these fighters during this food fight because there are new rules.
For this battle, the fighters must use pies like Bugs Bunny. Bugs is a food fight champion. He uses food to outsmart Elmer and other characters on a regular basis. The ref told the food characters that the winner had to fight Bugs, so they decided not to fight.