The Giant Breadbug is a boss in Pikmin 2. Unlike other Breadbugs, this one is large and shaped more almost perfectly cubical, looking like a whole loaf of bread, making it the largest species in the Breadbug family. It acts the same as normal Breadbugs, but is harder to damage by "rejection" from the Onion. Considered by many players to be the easiest boss in the game (boss theme music is not even played, though an exclusive tune is played only in the specific cave sublevel), as his more recognizble habitat is the last sublevel (6) of the Glutton's Kitchen and consists of only two other Breadbugs, electric nodes, and Anode Beetles.
This creature is also found in the Snack Pit in Challenge Mode.