Bruce Banner turning into Smart Hulk looked like the perfect mix of brains and power. He could think clearly while still hitting hard.

While Thanos may be one of the most powerful enemies ever faced in the MCU, the Hulk remains one of his most formidable opponents. Script by Devon Lord-Moncrief, video edited by Steven Suné.

Hulk and Thanos have also traded blows in Thanos vs Hulk, Marvel's recent Thanos series, and the Infinity event, with the Mad Titan swatting Hulk aside again and again. Most horrifying of all is ...

and we never got to see a Hulk vs. Thanos rematch. Mark Ruffalo, the actor who played the hero after Edward Norton walked away from the role, doesn’t seem to be done Hulking out just yet.