The battle between Hulk and Grey Hulk takes place in Grand Theft Auto 4. The Hulk is portrayed as a large green humanoid that possesses superhuman strength and invulnerability, attributes that grow more potent the angrier he becomes. Hulk is the alter ego of Bruce Banner, a socially withdrawn and emotionally reserved physicist who physically transforms into the Hulk under emotional stress and other specific circumstances at will or against it; these involuntary transformations lead to many complications in Banner's life. Grey Hulk is a personality of Bruce Banner and an alternative to the more savage Green Hulk. Unlike the green Hulk, this version speaks in proper English and is often sarcastic. This Hulk has control over himself. While he is very powerful, he is not as powerful as Green Hulk. Script by JulioNIB:.