The Hulk has recently undergone a transformation. Bruce Banner, his alter ego, split the Hulk into 3 parts: The Hulk’s body has been turned into a starship. Banner’s psyche pilots it from within the Hulk’s mind. And the Hulk’s psyche fuels the starship with his anger.
The Hulk was accused of killing the patrons of a bar in El Paso and while fighting Odin’s spirit inside his mind, he unlocked the memory of the event which showed he was not in control of himself, that maybe a new personality has been formed and committed the massacre and made him watch.
From – Thor Vol. 6 #25