Who was the strongest Warrior in Hindu Mythology

So, who was the strongest warrior, some people might say, Lord Ram, Lord Parshuram and Lord Hanuman, but the strongest warrior was Meghanadh, yes the son of Ravan. He was trained by Shukracharya(The guru of Asuras) and he possessed each every celestial weapon, he was the only warrior to possess the three most powerful celestial weapons The Vaishnavastra, The Pashupatastra, and The Brahmastra. On top of that, he had a boon from Brahma that before going to war if he performed a Yagna of his native goddess Prathyangira and completed it, It would impossible for anyone to kill him on the battlefield and become invulnerable.

     Meghanadh during the Devasura Sangram(Battle between Deva and Asur) captured Indra tied him to his chariot and dragged him to his father the Asura King Ravan. Meghanadh decided to kill Indra, but Lord Brahma Intervened and asked Meghandh to free Indra. Meghanadh agreed and freed Indra. Meghanadh obliged and was granted a chance to ask a boon, the one I have just mentioned above. Highly Impressed by his valor Brahma coined him the name "Indrajit"("The Conqueror of Indra").