BWDMH

Buggy Wuggy Duggy Muggy Huggy is Rookie's pet Computer Bug.

(Not So) Elite Penguin Force
In (Not So) Elite Penguin Force, Buggy Wuggy Duggy Muggy Huggy was loose in the EPF Command Room when The Party got there, and Rookie was searching for him amongst a ton of other Computer Bugs. Eventually he wandered into the Gadget Room and was inhaled by Kirby, causing Rookie to have a meltdown. A while later, Kirby felt sick and spit him back out.