👉 Megalomaniacs are individuals who exhibit extreme or excessive displays of narcissistic, delusional behavior. They may have a distorted view of themselves and others, often resorting to violent means to achieve their goals. Examples of megalomaniacs include: 1. John Lennon - Known as the "Beatle" due to his flamboyant personality and wild antics. 2. Marilyn Monroe - Known for her eccentricities such as her long hair, extravagant fashion, and bizarre behavior.