- 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 — S41E19
Episode: Twins Day on Sesame Street
Air Date: 2010-12-10
Overview
Twins are celebrated with their own special day. Chris introduces his twin sister Christy; Abby and Zoe decide they want to be each other's twin.