Dumpy

Dumpy is an NPC refueling the stove within the Blast Furnace on World 358. Players can speak to him to learn about operating the furnace.

Speaking to him or his brothers, Stumpy and Pumpy, will reveal that they have a rare genetic condition that makes them unusually tall. The player points this out, but he will say that this condition benefits them by allowing them to efficiently operate the blast furnace.