One of the principals in Book 4, Plunk is among the wobble of gnomes that moved into the struggling dwarf town of Bluerock following the disaster of the gelatinous cube related in Book 1. As a neighbor to Moses, he is little more than a cheery, insufferable pest.

However, he does seem to be the only one with an idea for saving Bluerock, though it would take someone of Plunk's childish naïveté to think of asking the high priestess of a death-worshipping cult for help. And that's to say nothing of the incidental minions that he and Moses stumble into along the way. Plunk's chief role in these adventures is bait - which turns out to be more or less equivalent to a rather frantic form of summoning magic.