Other mistake: Hawk gets a mohawk, but his hair was too short to style it like that.
Suggested correction: The mohawk was not a prop, but the actual hair of the actor they shaved off and mended together for him.
That is true, it was the actor's actual hair, but in the realm of the show, Eli's hair was not long enough to style that large of a mohawk out of it.
Other mistake: The shopkeeper hands Danny a Beretta 92fs/M9 handgun with a detached suppressor. To mount a suppressor to the muzzle end of the handgun the barrel needs to be threaded, and this one isn't. Sometimes barrels are threaded and when no suppressor is attached they are protected by a thread barrel cap to protect the threads from dings and bumps. There is no thread cap here either. (00:22:35)
Black Blood - S1-E1
Other mistake: All the Greek name variants are used over the Latin ones - including even "Odysseus" over the more familiar "Ulysses" (who is the same person). However when the story of Actaeon comes up, it's suddenly the goddess "Diana" that he saw. But all the gods have their Greek names, so that should be "Artemis." (As indeed is used in episode 2). (00:39:35)
No Way Out - S3-E3
Other mistake: Higgins is asked if she can hack a security feed from an office. She replies that she can do it, but it will only be audio, no video. When she hacks it, is only video, no audio. (00:14:10 - 00:15:35)
Other mistake: After Starfire burns the guy in the room everything is burned but the picture, magically.
Episode #1.3 - S1-E3
Other mistake: Dong-mae is standing atop a balcony, several meters above ground. Yet he is able to fully hear a conversation that two men are having about Ae-sin whilst they are on the ground and standing far away from the building he is in, without any of the other people or market stalls drowning out the sound. (00:16:59)
Other mistake: The Seattle Police officer's badge states Seattle Police, but the patch on his jacket states Metropolitan Police. (01:15:00)
Other mistake: The woodchipper is shown cutting wood, but is squeaky clean when the golfer sticks his hand in it to get the ball out.
Other mistake: The opening scene shows a captive with a hood over his head being dragged barefoot along a long driveway by two men. His feet are dragging over the ground. He is then strung up by his hands, and when they show his feet, there is not a scratch on them.