Che Guevara was an Argentine Marxist revolutionary, physician, author, guerrilla leader, diplomat, and military theorist. He played a key role in the Cuban Revolution and later became a symbol of revolutionary movements worldwide. Guevara was known for his opposition to imperialism and his belief in the power of the people to bring about social change. His iconic image, often seen in the form of a stylized portrait, has become a widely recognized symbol of rebellion and anti-establishment movements.