A yellow earless monkey who happens to be a "fix-it-up chappie" named Sylvester McMonkey McBean appears and offers the Sneetches without stars the chance to have them with his Green Star-On machine, for three dollars. The treatment is instantly popular, but this upsets the original star-bellied Sneetches, as they are in danger of losing their special status. McBean then tells them about his Star-Off machine, costing ten dollars, and the Sneetches who originally had stars happily pay the money to have them removed in order to remain special. However, McBean does not share the prejudices of the Sneetches, and allows the recently starred Sneetches through this machine as well. Ultimately this escalates, with the Sneetches running from one machine to the next.

This continues until the Sneetches are broke and McBean departs a rich man, amused by their folly. Despite his assertion that "you can't teach a Sneetch," the Sneetches learn from this experience that neither plain-belly nor star-belly Sneetches are superior, and they are able to get along and become friends.

Physical Description

He wears a green hat and bowtie.

Behind the Scenes

He appears on The Sneetches and Other Stories and Dr. Seuss on the Loose voiced by Bob Holt.

In the book he wears a green hat and green bow tie but in the video he wears a purple hat and a lavender pink bow tie and a green jumpsuit. In the book he has ears but in the video he has yellow hair.