Top Ten Most Dangerous Marvel Villains (Iron Man)

This list does not include enemies that are usually seen fighting an entire team, like Ultron or Doctor Doom.
The Top Ten
1 Mandarin The Mandarin is a fictional supervillain appearing in American comic books published by Marvel Comics. He is the enemy of Iron Man. The character was created by Stan Lee and designed by Don Heck, first appearing in Tales of Suspense #50.

He has a ring that controls matter. 'enough said.

2 Ultimo

He would be at the top of the list if the Mandarin didn't have a ring that controls matter.

3 Iron Patriot

Norman Osborn created the Dark Avengers, replaced S.H.I.E.L.D with H.A.M.M.E.R, and is the cause of Dark Reign.

4 Crimson Dynamo
5 Titanium Man
6 Melter
7 Living Laser
8 Whiplash (Marvel)
9 Detroit Steel

He has a machine gun and a giant saw.

10 Madame Masque