Usually every 6 months.
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.
abdominouble
Rockhoper is only seen when his ship has come to Club Penguin at the beach. See the related links below for the Rockhopper Tracker 2010 and some tips on how to find Rockhopper.
Rockhopper was last on club penguin at the Holiday Party 2012.
rockhopper
wait for him to come :[ it maybe hard
No, Rockhopper in Club Penguin, and in the real world is a penguin.
Rockhopper will come on the 21st of April 2011 or well known as EARTH DAY!
captain rockhopper already came in 2009, he will come in 2010
You mean "What is captain Rockhopper's username on club penguin?". The username of Captain Rockhopper is Rockhopper.
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.
Rockhopper is red