Jollibee: "Yum" mascot evolution Yum (formerly known Mr. Yum) is the mascot for the Yumburger, and one of the five main characters of "Jollitown". He is currently portrayed as an ingenious inventor and scientist. Yum is an average-sized boy with light skin, dark brown hair, and brown eyes. Since his redesign in 2008, he wears a hamburger-shaped baseball cap, yellow goggles, a purple shirt with blue and orange sleeves with his name in the center, a black bag in his waist, green cargo pants, and b