Adam Warlock is back once again and now he’s up against Mephisto! Mephisto isn’t really as impressive as he makes himself out to be. Adam Warlock definitely outranks him and by a large margin. One cannot compare their levels of power and Adam Warlock is the better fighter in close combat. I would also take him in a beam struggle. Mephisto will have to drop down the ranks with this loss. Adam Warlock wins.