9. Carrol’s

Carrol’s was an American fast food chain easily identified by its yellow slug mascot. The mascot later changed to a little blonde boy sporting a Fedora. The company began franchising once Herb Slotnick bought the rights. He saw potential in the hastiness and efficiency of cooking 15-cent hamburgers.

While all of Carrol’s locations closed, the holding company saw Burger King and jumped on the opportunity to start franchising and own locations. The company now owns over a thousand locations of Burger King and even some Popeye’s locations. The brand name Carrol’s was retired in 2012 and changed to Hesburger.