In the earliest strips, the dream would end because of a disaster that could hurt or kill Nemo. These events would be something like falling from a bridge, becoming a monkey, or becoming 90 years older. Later on Nemo reached Slumberland. Then "Flip" always woke him up. Flip wore a hat that had 'Wake Up' written on it. Other characters in the strip were Dr. Pill, The Imp, the Candy Kid, and Santa Claus.