The minds behind history's most iconic toy franchises discuss the rise (and sometimes fall) of their billion-dollar creations.

Toys can be more than simply children's playthings, the biggest ones can say so much about popular culture and the generations raised in it. This series covers the history of the major toylines of the post-World War II generations, the media franchises they represented, and how they reflected their times and how they changed with them.—Kenneth Chisholm ([email protected])