Codename: Kids Next Door (2002)

S04E14 Operation: M.U.N.C.H.I.E.S.

The Kids Next Door realize they’ve run out of their beloved Rainbow Munchies cereal and decide to venture to a grocery store for a refill. However, the only place that stocks this treat is the notorious Super-Villains Supermarket & Deli, a shop exclusively for villains.