What If…? Season 3 Episode 1 – What If… The Hulk Fought the Mech Avengers? – Captain America/Sam Wilson must suit up in a colossal mech suit to battle Bruce Banner after an attempt to cure himself of the Hulk goes horribly wrong. Bucky Barnes, Monica Rambeau, Moon Knight, and others must join Sam as his new team of Mech Avengers. – Stream What If…? Season 3 Episode 1 Online for Free – Watch What If…? Season 3 Full Episode 1 Free – OnionPlay Official