Complex sentence: Many baby boomers first saw John Doucette as the bad guy in several episodes of "The Lone Ranger", a natural role considering his rough looks, commanding presence, and skill with a gun.
Split into simpler sentences: Many baby boomers first saw John Doucette as the bad guy on television in several episodes of "The Lone Ranger". Performing as an outlaw proved to be a natural role for Doucette, considering his rough looks, commanding presence, and skill with a gun.