Mahavira, also known as Vardhamana, was the 24th Tirthankara in Jainism and is considered the founder of the modern Jain faith. He played a crucial role in shaping the core beliefs and practices of Jainism, emphasizing non-violence, truth, and asceticism as the path to liberation. His teachings laid the groundwork for Jain philosophy and ethics, which continue to influence millions today.