He sells milk, root beer and most likely other beverages. It's unknown where he actually lives at, he might be staying at the Dead-Eye Inn. He thinks William Krabs is cheap just like the real Mr. Krabs. His name is a parody of Hopalong Cassidy, a fictional cowboy created by author Clarence E. Mulford. He is voiced by Rodger Bumpass.
He is very similar to Squidward in appearance, but also has a handle-bar mustache and a vest and brown shirt. He is best known for putting five cents into the piano to play a song.
His attitude is just like Squidward's. He dislikes SpongeBuck, much like the present-time Squidward feels about SpongeBob.