Rockhopper (commonly abbreviated as RH, or referred to by his title, Captain Rockhopper) was a friendly pirate who visited Club Penguin Online parties or events with his red puffle, Yarr. He arrived on his ship, The Migrator, docking at the Beach, where penguins could explore the ship. Rockhopper kept a journal of his adventures, and sold rare items brought over from Rockhopper Island and other places in Rockhopper's Rare Items catalog on the Migrator. The Migrator was also the place where penguins could play the treasure finding game, Treasure Hunt. There was also a stamp for meeting Rockhopper, see List of Character Stamps.