Hulk transformation

:::Hulk Transformation:::
At first Bruce Banner changed into the Hulk at sunset and reverted to human form at dawn. However, Banner's body eventually changed so that his transformations into the Hulk were triggered by the release of adrenaline when he became intensely excited, no matter what time of day or night it was.

Usually the Hulk possessed little of Banner's memory and intelligence and was easily enraged. Hence, the Hulk was a menace, continually hunted by military forces commanded by the implacable General Ross. For a short time Banner managed through radiation treatments to maintain enough of his own personality when he became the Hulk to control himself in that form, and he even became a founding member of the Avengers in this form.

But once again the Hulk lost Banner's intelligence and became a brutish menace. For a surprisingly long time Banner managed to conceal the fact that he was the Hulk, but his secret inevitably became public knowledge. For years Banner has wandered the world as a hunted fugitive, cursed by his recurring transformations into the bestial Hulk.