Conversation so far:
Where can we trace betty boop's origin?
Betty Boop made her first appearance in the cartoon Dizzy Dishes released on August 9, 1930.
who was the originator of Betty Boop?
much credit has been given to Grim Natwick for helping to transform Max Fleischer's creation.

Question: Who else helped progress betty?
Self-contained rewrite: Who else helped progress Betty Boop besides Max Fleischer and Grim Natwick?