- 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 — S50E18
Episode: What Floats Rocco's Boat
Air Date: 2020-03-14
Overview
Elmo and Zoe try to figure out how to make Rocco the rock float. Leela helps them experiment with different materials until they design the perfect vessel.