Helping Hands, Iron Fist - S1-E4
Factual error: When Bruce Banner sees the Hollywood sign reflected in the puddle of water, the reflection is backwards.
The Return of the Beast: Part 1 - S1-E1
Factual error: When the Hulk jumps up and grabs on to the tail of the helicopter, he is somehow able to hang on to the tail while spinning the helicopter in a circle. Helicopters require a certain weight distribution in order to maintain stabilized flight. Someone of the Hulk's size and strength wouldn't be able to just hang on to the tail and spin the helicopter. He instead would bring the helicopter crashing down.
Factual error: When Hulk lands on top of Mount Rushmore, Teddy Roosevelt's glasses are missing.
Factual error: The opening shot of this episode incorrectly depicts the Lincoln Memorial Reflecting Pool to be located between the Washington Monument and the U.S. Capitol building. In reality, the reflecting pool is located between the Lincoln Memorial and the World War II Memorial, with the Washington Monument roughly 1/5 of a mile east of the World War II Memorial, and the U.S. Capitol nearly a mile and a half east of the Washington Monument.
Factual error: The opening shot of the Statue of Liberty shows the statue's left arm to be raised too high. The real statue has its left arm close to its midsection, whereas the statue depicted here has its arm nearly raised to shoulder level. (00:00:01)
Factual error: When Hulk throws the Humvee at the helicopter, the pilot bails just before it explodes and manages to deploy his parachute. The helicopter was hovering roughly 30 feet above some buildings. That's not nearly enough distance for the pilot to have deployed his parachute before he fell onto the roof of one of the buildings.
Man to Man, Beast to Beast - S1-E6
Factual error: Hulk rescues Taylor from the icy waters, but Taylor shows no signs of hypothermia afterwards. He should be shivering profusely. Hulk naively tries to cuddle the boy and blow on him, but even if that had the ability to warm him up a little, his wet clothes would still be an issue.
Factual error: The moon in the night sky in this episode is far too large.
The Return of the Beast: Part 2 - S1-E2
Factual error: When Betty's humvee breaks down in the middle of the desert, she gets out and steps over a scorpion. The scorpion is shown to have 10 legs (4 standard legs and 2 pincers). Scorpions have 8 legs.
Suggested correction: A scorpion's pedipalps (their pincers) are not legs. Scorpions and other arachnids have 8 legs and 2 pedipalps.