Hetti the Yeti appears in the Elmo the Musical segment, "Mountain Climber the Musical." She lives on top of Mount BiggestEverest and is feared by all those who live by it. Mountain climber Elmo, however, doesn't believe she actually is real. As he and Sheepa the Sherpa make their way up, they hear growling and Sheepa flees. Elmo slides down the mountain and is caught dangling from a cliff. Hetti appears and saves him, claiming her roars were her way of expressing how cold it is. Elmo sees how nice she is and is led to the top of the mountain, where the two perform the "BiggestEverest Finale."