Dreadnought

The Dreadnought was a robot created by Hydra. It was first used in an attempt to breach the S.H.I.E.L.D. Helicarrier and assassinate director Nick Fury. Later the design and specifications for it were sold to the criminal cartel, The Maggia. Maggia made at least two advanced Dreadnought models (MK I & MK II) that proved inefficient in combat with Iron Man. R.A.I.D. later smuggled a disassembled upgraded version of a Dreadnought into London as part of their terrorist attack against that city. Once the robot was reassembled, it went on a rampage in Trafalgar Square. It was defeated by an ad hoc team of superheroes led by Union Jack who took advantage of a vulnerability in the new design, puncturing a large canister of liquid nitrogen, encasing the robot in ice.

More recently, a new model of Dreadnoughts was built by Ezekiel Stane, and used by Mandarin to attack the Three Gorges Dam in China.

Marvel Universe

 * Iron Man 247

Marvel Animated Universe

 * Avengers: Iron Man Is Born