This guys to conquer our Earth!

How long would it take each of these characters to control/conquer our planet if they come to the planet without advanced tech and have to start with no money or resources?

Batman
Lex Luthor
Reed Richards
Doctor Doom
Kang the Conqueror
Superman
Thor

Character with power would take little time, but there will always be rebellions.
I can see Batman, Lex, Doom, and even Kang can take it in a few years.

Assuming this means the real world we live in...

Batman: Couldn't do it in his lifetime.
Lex Luthor: Can't do it.
Reed/Doom: Can possibly do it.
Kang: Depends if he has knowledge of future events of our world.
Superman/Thor: Can do it in a matter of seconds.

Originally posted by JakeTheBank
Assuming this means the real world we live in...

Batman: Couldn't do it in his lifetime.
Lex Luthor: Can't do it.
Reed/Doom: Can possibly do it.
Kang: Depends if he has knowledge of future events of our world.
Superman/Thor: Can do it in a matter of seconds.

Exactly!

The only one that probably even manages it is Superman, because his power derives from a relatively mundane power source.

Our world is devoid of magic, meaning Thor is simply a strangely-dressed Scandinavian man with a large paperweight.