Heather Asch has worked as a puppet builder on many Muppet projects, including The Muppet Christmas Carol, Muppet Treasure Island, Animal Jam, and Sesame Street. She continues to puppeteer on Sesame Street, assisting for Baby Bear, and playing Hansel (of Hansel and Gretel), among others.
Asch has created her own puppetry pieces, including Bosom Buddies, which deals with the subject of breast cancer. Asch performed Bosom Buddies at "A Passion For Puppetry", a tribute benefit to Nikki Tilroe in January 2006.
Asch also works at Jim Kroupa's puppet workshop, 3/Design