Liz Allen is one of my favorite improv teachers of all time. And in my humble opinion, may go down as one of the most influential people in all of improv. I hold her in such high regard. 

Liz was iO's Training Center Director for three years and they renamed their Teacher of the Year Award to the "Liz Allen Excellence in Teaching Award."

To find out more about Liz: https://www.lizallenimprov.com/

And be sure to catch her one-woman show "Tonight I am my Mother."  It is fantastic.