The Incredible Hulk #172

Hulk has been captured and put in a holding cell at Hulkbuster base. As he is quickly dismantling the walls of his prison, Armbruster calls on Peter Corbeau who brings a ray to teleport the Hulk to another dimension. Hulk is blasted away but the Hulkbusters find themselves facing the Juggernaut in his place. When they try to use the ray again, the Hulk returns as well and the two powerhouses quickly bust out and get away. Hulk quickly finds he does not like his new ally and the two battle. The X-Men show up to capture Juggernaut but allow the Hulk to escape.