On disc one, go to Special Features then Character Files.
There will be movie credits for Tobey, Kirsten, Willem, J.K - Jonah H, Rosemary - Aunt May, and Cliff - Uncle Ben. Click on one of the pictures to see their film credits.
From there you can go back to the list of those 6 actors, going forward to see more credits or back in case you missed one or something.
Each actor has 2 pages with their film records on it.
Half on one page, the rest on the others.
The following works for everyone except for Cliff's (Uncle Ben) film credit: On the second page of any of the remaining 5 actors, you press Up on your remote and the actor's name on top gets circled. Click on that and the info on their character comes out.
From there you can see occupation, age, height, first appearance. The images shown next to the info is a comic book picture of a scene from the movie.