A My Name Is Annabel features characters whose names begin with each letter of the alphabet, who describe themselves using that letter. The roll call includes Annabel, Betty Lou, Big Bird, Barkley, Cookie Monster, Duncan, Ernie, Ferdinand, Grover, Herry Monster, Isabel, Jack, Katie, Linda Lou, The Amazing Mumford, Norbert, Oscar the Grouch, Prairie Dawn, the Queen, Rodeo Rosie, Mr. Snuffleupagus, Twiddlebugs, Ukulele Luke, Violin Vance, Washboard Will, Xavier, Yolanda and Zelda May.