Jon Dweck
Jon Dweck  was a child who portrayed an Only in the  first season episode . Jonathan Dweck is the son of Grace Lee Whitney and Stevan Dweck, Ph.D., and youngest brother of Scott Dweck. The family grew up in Los Angeles, California. Dweck chose a career as a science teacher, which he has taught for nearly 30 years.

de:Jon Dweck
es:Jon Dweck
Performers
TOS performers