What a spoiled lad Mushu is
He is a very handsome floofy ham-man!
If the playpen you got was the metal barred one, I would suggest not taking it out of its packaging and returning it - hammies quickly learn how to climb out of them. There's a good suggestion for a more hamster-proof playpen in the DIY section of the forum (though hammies should still be supervised in it).
I look forward to hearing more of Mushu's adventures.