How do comic characters make the jump from the comics to another medium?
Typically a license is purchased by a production company to make a show or a movie, that grants them the rights for a certain amount of time. And then they try to get it made and sold within that time. This has changed more recently with Marvel Studios, since there’s no license necessary, and we’ve got access to the entire library of characters. These days, the Studio guys pore over the catalogue of characters past and present and work out what they think is going to be viable as a film or a television series or cartoon, then begin to develop the property for those mediums.