Skanda is an X-Men character who is friends with Hank McCoy. He is inspired by Kartikeya, the son of the Hindu god Shiva.
Thor defeated him in an Epic Battle. When Thor asked for a portion of Daeva's energy to revive the Asgardians, he was in Shiva form.
Shiva first appeared in Thor #301, but eventually became Indra, the Vedic thunder-god. Shiva first appears in Thor (Vol. 2) #61 after this retcon.
One of the Hindu pantheon's three chieftains is Brahma, the God of Knowledge. Despite his few comics appearances, he is too powerful to be a supporting character.
Vishnu, Hinduism's leader, sits on the Council of Godheads. There was a meeting between the Hindu God and Odin and Zeus, the Norse and Greek Gods.
Ahriman is Ravana's other name. He tried to corrupt Superman with Morrigan, Mixcoatl, Baal, and Izanami.
Lord Rama and Wonder Woman clashed in DC Comics. He is a powerful Vishnu incarnation.