Is incredible hulk a villain

Answer 1

No, the Hulk is a superhero not a supervillain.

Here's Stan Lee explaining his creation of the Hulk:

"I combined Jekyll and Hyde with Frankenstein," he explains, "and I got myself the monster I wanted, who was really good, but nobody knew it." ... "I thought, 'Wouldn't it be fun to create a monster and make him the good guy?'"

For source, see link below.

The above is true but the hulk has been the villain a number of times after becoming out of control he has killed the avengers, savagely beat superman and thor, as well as several others. He is more like a rogue powerhouse.