Other mistake: When Bruce Banner is attempting to rescue the nun from the fire, a beam falls from the ceiling and hits him in the head, triggering his transformation into the Hulk. Just before he starts his transformation, a set of green glowing eyes appear above his head. It appears the animators didn't properly sync the glowing eyes onto Banner's face.
Continuity mistake: When Bruce Banner is in the soup kitchen, he is seated in a chair next to the one at the end of the table. In the shot just before the explosion, he is getting out of his chair, which is now the one at the very end of the table.
Helping Hands, Iron Fist - S1-E4
Revealing mistake: When Iron Man appears on the screen in the Hulkbuster armor, if you look at the background behind him, there is a closed door behind him to his right and a control panel directly behind him, which means he appeared from out of nowhere.
Helping Hands, Iron Fist - S1-E4
Continuity mistake: Early in the Hulk's fight with Iron Man, he punches Iron Man onto the hood of a red car and then throws a blue car at him. Iron Man disappears from the screen as soon as the blue car hits the red car, and then can be seen either back on the hood, or instantly inside the car. If he is still on the hood, then he disappears from the screen once again when Hulk throws the car.
Helping Hands, Iron Fist - S1-E4
Continuity mistake: When Hulk punches Iron Man into the bus, Iron Man is shown landing through the roof in the middle third of the bus on the driver's side. When the shot changes to Iron Man inside the bus, the hole in the roof is now shown to be down the center of the bus and closer to the front.
Continuity mistake: When the Hulk lands in the streets of Chicago after his battle with Ghost Rider, he is in the middle of the street. When the shot changes, he is suddenly next to the curb and a mailbox.
Man to Man, Beast to Beast - S1-E6
Continuity mistake: When Dr. Langkowski climbs into the large test tube to run the experiment on himself and Banner, he uses a hatch wheel to seal his tube closed. When the shot changes, the wheel has disappeared.
Man to Man, Beast to Beast - S1-E6
Continuity mistake: When Taylor discovers Sasquatch's footprints in the snow, they have no toe prints. When Taylor's father finds the same footprints, they now have toe prints.
Man to Man, Beast to Beast - S1-E6
Revealing mistake: When Hulk uppercuts Sasquatch into the ice wall, if you look closely you can see that Hulk's fist doesn't even make contact with Sasquatch.
Man to Man, Beast to Beast - S1-E6
Continuity mistake: When Dr. Langkowski is talking about solving the mystery of gamma mutation in humans, a couple pens appear in his shirt pocket.
Audio problem: When General Ross is shaking hands with Doc Samson and saying "Welcome aboard. I'll see you at the team briefing in the base hangar, five minutes," his mouth is closed for the first 8 words.
Helping Hands, Iron Fist - S1-E4
Continuity mistake: After Rick Jones finds Bruce Banner among the overpass wreckage, Bruce starts transforming into the Hulk and grabs some gray rubble, which immediately turns the same color as his flesh.
Helping Hands, Iron Fist - S1-E4
Continuity mistake: When Rick Jones is hanging on to the containment unit that the Hulk is trapped inside, at one point the Iron Man gauntlet that he borrowed switches from his right hand to his left.
Helping Hands, Iron Fist - S1-E4
Continuity mistake: When Doc Samson is carrying the cylindrical tank for the nutrient bath, he is holding it from the bottom rim. When the shot changes, he is holding it from the outside.
Continuity mistake: When Talbot arrives to attack Hulk, he is wearing a hat. When he falls out of the helicopter, the hat is missing. When he lands on the roof, the hat is back on his head.
Answer: The Hulk is a giant brute who smashes everything in his path when he is angry. In Ang Lee's "Hulk," General Ross, played by Sam Elliot, explains it to his daughter.