During the Gilded Age, influential figures like Andrew Carnegie and John D. Rockefeller emerged as both Robber Barons and Captains of Industry, leaving a significant impact on the economy and society.

Andrew Carnegie is a prime example of a Captain of Industry. His steel empire revolutionized the industry and played a crucial role in the growth of the United States. Carnegie's innovative business practices, such as vertical integration and the implementation of the Bessemer process, allowed him to dominate the steel market. He also believed in philanthropy and donated a large portion of his wealth to causes such as education and libraries.

John D. Rockefeller was another prominent figure of this era. He founded the Standard Oil Company and became the richest man in the world. Rockefeller's company controlled around 90% of the oil industry, which led to accusations of monopolistic practices. However, his immense wealth also enabled him to establish various foundations and support charitable endeavors, making him a controversial but influential figure.

These Robber Barons amassed enormous fortunes and exerted tremendous power over the economy. They wielded immense influence and often used questionable tactics to eliminate competition, such as unfair pricing and aggressive business practices. Yet, their organizational skills and innovative strategies also fueled economic growth, creating jobs and driving progress.