What was McDonald's first nationally advertised mascot after Speedee?

Ronald McDonald was McDonald's first nationally advertised mascot after Speedee.

McDonald's introduced Ronald McDonald in television advertising during the early 1960s. The character was created to give the company a memorable, friendly figure who could appeal especially to children and families.

Ronald's early presentation drew on McDonald's food and restaurant imagery, but his design was later refined into the familiar red-haired clown costume. He became the central figure in national advertising and was subsequently joined by characters such as the Hamburglar, Grimace, and Mayor McCheese.

Speedee belonged to the chain's earlier identity and represented fast service. The later McDonaldland characters were introduced after Ronald had already become established. This distinction matters because the characters are often grouped together even though they entered McDonald's branding at different times.