They are three men in suits, the left one is Harry, middle one is Combover and the right one is Bald. They were hired by Squidward.
They decided that SpongeBob was forced to stay 15 feet away from Squidward, and placed a restraining order on him. Their names are Harry, Combover, and Bald, who each are what their name describes them as, Harry is really hairy, Combover has a combover, and Bald is bald.
"You've been served!"
"That's not our problem!"
These three have a tendency to all talk simultaneously, and can finish each other's sentences.
It is unknown exactly how they left. They could have either swam or "flown" away.
Harry, Combover, and Bald are each a type of hairstyle.
All of the lawyers are wearing different colored shoes. Harry wears white shoes, while Combover wears brown shoes and Bald wears black shoes.