- Frank Oz (Bert)
- Sonia Manzano (Maria Figueroa Rodriguez)
- Roscoe Orman (Gordon Robinson)
- Martin P. Robinson (Telly Monster/Aloysius Snuffleupagus/Irvine/Slimey (voice))
- Suki Lopez (Nina)
- Violet Tinnirello (Charlie)
- Jennifer Barnhart (Zoe (voice))
- Ryan Dillon (Elmo (voice))
- Alan Muraoka (Alan)
Sesame Street — S41E5
Episode: What’s That Noise
Air Date: 2010-10-01
Overview
Elmo is sleeping over at Maria and Luis' apartment. When Elmo tries to sleep, he hears a strange noise. He calls them in, but the sounds stop when they listen.