- Irvine, niece -- Sesame Street
- Floyd and Lloyd, twin nephews -- Episode 0339
- Filthomena, niece -- When Oscar Was a Little Grouch
- Timothy Grouch, nephew -- "The No Song", Fair Is Fair
- Bert, nephew -- Sesame Street Sing-Along!
- Charlie, nephew -- Sesame Street Season 2
- Oscar the Grouch, nephew -- A Special Sesame Street Christmas
- Muppet Relatives for a complete listing of Muppet families