The portrayals are fairly accurate in capturing the essence of the characters. For example, Rick Dalton represents the typical struggling actor of that era.
In 'Once a upon a time in hollywood', the portrayals of real - life characters have a good level of accuracy. Sharon Tate is depicted as a beautiful and talented actress, just as she was in real life. Her charm and her place in the Hollywood scene are well - presented. Rick Dalton's character is also a great representation of the actors who were on the verge of losing their stardom. He has the right mix of ego and vulnerability that was common among actors in that time. The movie also includes real - life personalities like Roman Polanski in a way that feels true to their real - life personas, while still fitting into the narrative of the movie.