Rockhopper only comes around when he has his ship by the Beach. This is during parties, as that is the only time he docks at Club Penguin. It is very hard to find him when he goes from server to server. Some penguins almost think it's impossible to find him, but that's not true.
rockhopper
Rockhopper was last on club penguin at the Holiday Party 2012.
No, Rockhopper in Club Penguin, and in the real world is a penguin.
For this you have to meet Rockhopper on club penguin. When you do so, click Rockhopper's player card and click the box. You will get his background.
You mean "What is captain Rockhopper's username on club penguin?". The username of Captain Rockhopper is Rockhopper.
Rockhopper is red
Rockhopper is one of club penguin's 'celebrities'. He was one of the first, along with Aunt Arctic and the Penguin Band.
Rockhopper's Migrator is at the Beach, though unless Rockhopper isn't visiting Club Penguin, you won't be able to see Rockhopper's Migrator.
Rockhopper.
The migrator always stays with Rockhopper, whether he is on Rockhopper island or on the club penguin island. Currently (April 2013), the migrator is with Rockhopper on Rockhopper island, but when he'll come to club penguin, he'll be sailing on his migrator.
Even though Rockhopper does have a hat, it is not buy able for users of Club Penguin and therefore the only answer given is that Rockhopper's hat is on Rockhopper's head.
Rockhopper's password is rockhopper. Trust me i have been on it.