The fridge squirrel feels the need to take an entire month's food supply into the office environment leaving no room for anyone elses.The fridge squirrel refrigerates everything,including unopened tins of tuna, and also likes to buy in bulk (2 litre soft drinks etc.)
3. Lacking basic and/or needed skill-sets to succeed in current work, much less advanced position, or someone who is employed well above what subordinates or co-workers believe they are intellectually able to handle