Character mistake: When Frank is starting to show Amy how to take the gun from him he removes the magazine and makes the statement "clip empty" - any Marine, certainly one as well trained as him would never refer to that as a "clip" - it is a magazine. A "clip" is a device intended to help rapidly load ammunition into a magazine.
Character mistake: The team is using names of cities in Puerto Rico to show progress on their mission. Condado and Arecibo are misspelled. (00:04:00)
Behold... The Inhumans - S1-E1
Character mistake: When Hunter One and his men are trying to sneak up on Gorgon in the jungle from behind them, Gorgon chuckles and says, "Never approach downwind, dumbass." He then proceeds to counterattack them. This implies he smelled them coming with the wind. However, this is backwards, as they would need to approach from upwind for their scent to carry to Gorgon. Approaching from downwind would be correct. So he should have said, "Never approach from upwind, dumbass." (00:33:35)