Robin Williams' comedic style was heavily influenced by several key factors, including his improvisational skills, theater background, and personal experiences. His time at the Juilliard School refined his acting skills and helped him blend humor with emotional depth. Williams often drew from his own life, incorporating themes of mental health and human connection into his performances. The influence of comedians like Jonathan Winters and spontaneity in his comedic style allowed him to create unique, often playful characters that captivated audiences.