The money waiter is the waiter of the "restaurant" whom Mr. Krabs "takes" Mrs. Greenback to. He appears in the episode "Safe Deposit Krabs."
The money waiter is completely made of money. He has a bow tie and double arch "hair." Mr. Krabs gives him a French accent.
Role in episode
The money waiter appears when Mr. Krabs moves him over to the table where himself and Mrs. Greenback are sitting. Mr. Krabs voices the waiter and he "takes" their orders.
When Mr. Krabs moves the waiter away, Mr. Krabs feels bad that he is not going to give the waiter a tip.