Thor is a comic book character created by Marvel Comics and is known as one of the most powerful and beloved heroes of the publisher. He is the god of thunder and lightning and is the protector of Asgard, the realm of the Norse gods. Thor has a number of supernatural powers, including the ability to manipulate thunder and lightning, superhuman strength, immortality and the ability to fly. He is also the owner of the magical hammer Mjolnir, which gives him a number of additional supernatural abilities.
Doomsday is a comic book character created by DC Comics and is known to be one of the publisher's most powerful and feared villains. He is a cosmic monster who has come to Earth with the goal of destroying everything in his path and becoming the supreme being in the universe. Doomsday has a number of supernatural powers, including superhuman strength, immortality and the ability to regenerate any part of his body. He is also virtually indestructible, making him a formidable foe for any hero who confronts him.