The money violinist is the violinist of the "restaurant" that Mr. Krabs "takes" Mrs. Greenback to. He appears in the episode "Safe Deposit Krabs" and the short "Fish Food Rescue: The Krusty Krab."
The money violinist is completely made of money. He has coattails and plays a money violin. The money is arranged to imply that he has formal clothes on.
Role in series
"Safe Deposit Krabs"
The money violinist appears when Mr. Krabs dances with Mrs. Greenback.
"Fish Food Rescue: The Krusty Krab"
The money violinist makes a cameo in a brief shot of Mr. Krabs dancing with Mrs. Greenback