Who was the white European royal accused of killing and mutilating people from the Congo?

The white European royal accused of killing and mutilating people from the Congo was King Leopold II of Belgium. His exploitation of the Congo Free State, which he personally owned from 1885 to 1908, led to widespread atrocities, including forced labor, violence, and mass killings, resulting in millions of deaths. The brutal regime was primarily driven by the desire for rubber and other resources, and it drew international condemnation for its human rights abuses.