Any of the 'Dark Magic' characters (Voldemort, Tom Riddle, Bellatrix), since they are needed to open the dark magic items (red sparkles). You can't do without Harry's invisibility cloak or his ability to perform the Patronus Charm, and Hermione's ability to reason the book cases, though.
You can use the character detector to find all of the Lego Harry Potter characters.
Yes, it is possible to create your own characters on Lego Harry Potter.
Griphook and Mrs. Cole are the only two characters that carry keys on Lego Harry Potter years 5-7.
There is no tube on Lego Harry Potter.
use polyjuice potion
There are about 55 Lego Harry Potter sets to buy.
Lego Harry Potter is a Logo theme based on the films of the Harry Potter series.
so far only in Lego Harry Potter years 1-4.
After Harry Potter, the next Lego game was Lego Pirates of the Caribbean.
For Lego Harry Potter, there is no PC demo.
Yes, Lego Harry Potter will be available for PSP.
Yes, there is a Lego Harry Potter demo game.