Their only known quotes are "But... Uncle... Krabs!" and "Grumble, grumble, grumble..."
All three of them look like their uncle Mr. Krabs, except they are much younger and smaller, having shorter noses, and not having an undershirt and a belt; they wear light-blue shirts and blue shorts. According to Mr. Krabs, they solve mysteries. Also, they finish each other's sentences.
The group is seen when Mr. Krabs is seen talking about how many relatives got passed over for a job at the Krusty Krab. He explains that he turned them down, and he says that they like to solve mysteries. He demands them to solve the mystery of why they didn't get the job, causing them to walk away in annoyance.