Those who joined Mahatma Gandhi during the Champaran struggle included Rajendra Prasad and Anugraha Narayan Sinha.

The Champaran Satyagraha was a significant event during India`s freedom struggle, which took place in Champaran district of Bihar, India, in 1917. Mahatma Gandhi led the nonviolent resistance movement against the oppressive indigo plantation system imposed on the farmers by the British landlords.

During the Champaran struggle, Rajendra Prasad, who later became the first President of independent India, actively supported Gandhi and played a crucial role in organizing and mobilizing the local farmers. Anugraha Narayan Sinha, a prominent leader from Bihar, also joined Gandhi in the movement and contributed to its success.

Vallabhbhai Patel, Vinobha Bhave, Jawaharlal Nehru, Mahadev Desai, and Maniben Patel were prominent figures in India`s freedom struggle, but they were not specifically associated with the Champaran struggle led by Gandhi.