You can costumize Dr. Hare on 24 Carrot Island and when he appears as a contestant on Reality TV Island. His special pink armor is the reward for playing the Dr. Hare's Secret Lab game (costs 250 credits in the store).
The Hypno costume is a bonus item on Poptropica that appeared in July, 2010.
Get it by going to Early Poptropica, and left into Poptropica Towers. Locate the GREEN building, which has a flowerpot on the middle window of its 4th floor. Go to the window with the flowerpot and click on the upper left pane of the window.
you cannot it is impossible the closest you can get is the pirate costume in the store or copy a pirate on Skullduggery island.
no you can not.
in the store
The costume, like others at the Poptropica Store, has an effect built in, but will not change the play of any Poptropica island or game.
ther is n harry potter costume in poptropica, sorry. (it would be cool though!)
You Cant
If your daughter wants to be a captain for Halloween, I saw a Captain Hook costume on the Disney Store's website. It was a very nice costume with a lot of pretty details.
You buy it at the poptropica store
It is the fire man!!
I vampire meow
any island
The jack'o'lantern is a costume, previously available in the Poptropica Store.
As of August 2014, there is no Pharaoh costume available without a top. The traditional costume is available through the Costume Closet.