The Fry Kids are McDonaldland characters who have been used to promote McDonald's french fries. They look like brightly colored pom-poms with eyes. They are usually silent in television commercials but sometimes talk gibberish.
The characters were originally called Gobblins (a play on the word goblins) because they liked to gobble up the other McDonaldland characters' french fries. The commercials they appeared in were accompanied by a jingle that said, "Keep your eyes on your fries".
The name was later changed to the Fry Guys and then to the Fry Kids when female chararcters were introduced.