This Hulk is a response to the trauma of Bruce’s death and rebirth – Bruce is at a lower ebb than he’s been in a very long time, he’s living off the grid, avoiding his friends, he’s not even visited Rick’s grave… this Hulk is a response to that. We’re sort of drip-feeding little bits of this Hulk’s nature, dropping hints – I’m writing #7 right now, and that drops a very big hint indeed. We might have seen this Hulk before, in another form.
One thing I will say here is that previous Hulks have been Banner’s enemy, and this one isn’t quite that – but he’s a force of judgment, and eventually that force has to be turned in Banner’s direction.
http://www.freaksugar.com/al-ewing-i...ulk-interview/