In The Incredible Hulk, there is this epic scene with the Hulk and Betty Ross in a cave – after he rescues her from the attack ordered by General Ross.

First slapped by Betty and then anguished by thunders, the Hulk is really not in his comfort zone – if this notion is at all applicable to the Hulk. But Betty manages to calm him down: “It’s ok, it’s just the rain”.

Also in The Incredible Hulk, after defeating the Abomination, the Hulk listens to Betty and doesn’t apply the death stroke, leaving the monster unconscious (???). He refrains from killing him, which is more than enough to show he’s as receptive as it gets in order to do the right thing.

Then there come the two lullaby scenes in Age of Ultron. The Black Widow is the team’s Hulk whisperer. And whatever her words (“the sun is coming down”) mean to the Green Goliath, they work.

Clearly, Betty Ross and Natasha Romanoff are privileged from this point of view. I dare say they can pacify the Hulk only due to their romantic – however vague – involvement with Bruce Banner.

2. The Hulk is unselfish. He cares

This sounds a little mushy, right? But the Hulk clearly has a soft spot for the weak. Or for whoever is in danger. Having doubts? On top of the above, let’s remember the following.