Dexter was a large monster juggler on Sesame Street. According to his performer, Kevin Clash, he was Sesame's "most spectacular failure."
Clash discussed the experience (referring to the character as "Juggles the Juggler") in My Life as a Furry Red Monster:
I puppeteered the head of the character and we found a talented artist named Fred Garbo to do the juggling while squatting under the camera's frame. Talk about tough! Trying to coordinate Fred's actions was next to impossible. Fred was the best, but this was asking too much. We spent most of our time in rehearsal rounding up dropped balls, stumbling over one another, and flubbing lines of dialogue - just try concentrating on what you're saying when you've got balls flying around your head.