How are Atticus Finch (to kill a mockingbird), Walter Lee Younger (raisin in the sun), Huck Finn, (Huckleberry Finn) and John Procter (the crucible) alike?

Have you read all four books?

First, write down adjectives to describe each character, then compare and contrast them. You might want to Google for Spark Notes for each book.

I was absent for most of huckleberry finn and all of to kill a mockingbird. Are there any traits that I may be missing that they both can relate to the rest or how they are the protagonists in the story?

Did you look up Spark Notes (or the print version at your library, Cliffs Notes)?