In earlier films in the MCU, the Hulk was referred to with fear as a hulking beast – another barrier for Bruce Banner to overcome. The fact that Walker uses "Dr. Banner" instead, shows that Banner's transformation into "Smart Hulk" prioritizes his most valuable abilities: his intelligence and experience as a scientist.

How smart is the Incredible Hulk?

Even in his allegedly “stupid” form, the Hulk regularly shows he's a super genius with an intellect that matches and possibly exceeds Albert Einstein or Stephen Hawking. Moreover, he uses his smarts for the benefit of humanity every time he leaps, smashes a building, or tears apart a tank.

Is there a smart Hulk?

Smart Hulk was introduced in Avengers: Endgame, but now, Bruce Banner (Mark Ruffalo) wants to return to his human form — why? After their loss to Thanos (Josh Brolin) in Avengers: Infinity War, the surviving Avengers spent the next five years differently. Iron Man (Robert Downey Jr.)