The Dwarves in Flagon’s realm are sort of inept. That’s kind of like saying water is sort of wet.
Standard fantasy dwarves are usually hardworking and industrious, laboring as either magical blacksmiths or mystical miners. These guys labor as little as possible, and often with negative results when they do bother.
The mining types have a fondness for explosives and have no idea how to use them properly. Happily they also have the Wile E. Coyote trait of being virtually indestructible. Or unhappily, it depends on whether you have to put up with them.
In keeping with Disney tradition, most of them have names reflecting their personalities for easy reference. There will be an ever-growing list of them (around 12 anyway), but here are the first eight. I’ll add new ones here when they show up.