sandman, because he is made out of sand and the fallen is gust a robot. the fallen does not stand a change against sandman.
sandman
the fallen
sandman would lose to green goblin who would lose to dr. octopus who would lose to rhino who would lose to venom who would lose to: Electro. Why? He's the only one who doesn't have to move to win, and he beat all of them before, ESPECIALLY sandman and venom!
the fallen
the fallen or.... ME!
the fallen and megatron
the fallen
In a battle between Moby Dick and Sandman, it would depend on the context of the fight. Moby Dick, being a massive white whale, would have a physical advantage in water, while Sandman, with his ability to control and manipulate sand, would be formidable in a desert or sandy environment. Ultimately, it would be a close and intense fight with uncertain outcomes.
optimus prime, because heros wins all the time.
the 7 godzillas
Moby Dick because he is a huge sperm whale. The fallen is just a robot. The fallen wouldn't stand a chance against Moby Dick.
In a fight between the Avengers and Sandman, Hawkeye would completely be useless. He might even get injured. You would need Iron Man and Spider-Man to work together. Iron Man can distract Sandman from the sky while Spider-Man quickly gains access to water and solidifies Sandman. Iron Man can then use explosive charges to wrap things up and win the battle. Go, Avengers!