Suggested by Sonic Dr Manhattan has always thought of himself as a super powerful individual, but when you really think about it he just doesn’t stand a chance against Melkor. Melkor has proven himself to be just as mighty and even more so since he actually fights. Melkor can turn giant, he can fire off elemental blasts, create force fields, etc. There’s nothing Dr Manhattan can do that Melkor can’t counter and surpass. In a straight fight between these two I don’t expect it’ll even be all that close. Melkor wins.