Aamir Khan is called 'Mr. Perfectionist' in Bollywood for his meticulous attention to detail, doing one film at a time, and extensive preparation for roles. Shahrukh Khan is known as 'King Khan', Amitabh Bachchan was the 'angry young man' or 'Star of the Millennium', and Ajay Devgn is known for intense action-drama roles but not specifically as a perfectionist.