Tales of Suspense #76-78 (1966)
By Stan Lee, Adam Austin*, Gene Colan, Gary Michaels
Background: Iron Man battles his friend Happy Hogan, accidentally turned into The Freak.
So, What Happens? A nearly depleted Iron Man manages to turn the Freak back into Happy, who suffers from amnesia and appears to have forgotten Shellhead's secret ID. Tony Stark is forced to travel to Washington in order to testify under oath and reveal the identity and secrets of Iron Man, but en route is kidnapped and teleported away to China by the Mandarin. The villain wants revenge against Iron Man following his last defeat and has created Ultimo, a gigantic android so big and powerful he had to build and hide it inside a sleeping volcano. Obeying his master's wishes, Ultimo awakens and attacks the Chinese army trying to invade the Mandarin's fortress, easily cutting through them. Unaware that Tony and Iron Man are one and the same, the Mandarin attempts to kill Stark, who survives thanks to his chest plate and wears his armor just in time to face Ultimo. Iron Man is completely outclassed by the massive Android but thanks to his superior manoeuvrability manages to stay alive long enough to figure out a plan. He tricks Ultimo into firing his eye beams against the volcano, reawakening it and causing an explosion that seemingly destroys the Android. Too low on power to fly back to the States, Iron Man steals a military plane and gets back home, only to discover that in his absence his factories have been shut down by government order.