Continuity mistake: As Doctor Abbott sits in a chair before Steve breaks through the window, Abbott's hand is by his head. The scene cuts; now he has an open book in his lap. Another scene cut, and the book is gone.
Factual error: When Steve plays the guitar, his bionic right hand is strumming very fast, and the sound of the guitar goes from a low-pitch sound to a higher-pitch sound. Going up in pitch relies on the chording hand (Steve's left) and can only happen when the guitarist moves his chording hand up the guitar neck to the guitar's body.
Continuity mistake: After Steve rescues Susan from the quicksand, her white pants are wet and covered with dark mud, except a few consecutive scenes later when her pants are spotlessly clean.
Other mistake: When Steve's bionic arm is being bitten by the crocodile, his jacket sleeve does not have any teeth holes, isn't ripped, but is intact with no damage.
Visible crew/equipment: After the power plant manager is done speaking with Oscar Goldman on the phone, the shadow of a boom mic is visible on the back wall.
Continuity mistake: Steve props himself against the back of the armored car with his arms folded and legs together stretched outwards to wait for the bad guys to drive up. When they do, Steve is now sitting on the rear bumper of the armored car with his legs spread and his hands on his knees.
Visible crew/equipment: When one of the townspeople recovers from unconsciousness and starts to get up, a small truck with a double-door canopy is reflected in a window driving by. In this episode, everyone in town was knocked out, so no vehicles would be driven by them just yet.
Continuity mistake: When Steve tries to remove the red dart from his back, it is positioned higher than in the previous shot.
Revealing mistake: When Steve is hit with a dart in the back, the safety pad under the stuntman's shirt protrudes.
The Coward - S1-E12
Revealing mistake: When Steve swings a branch at the riders, and again when he jumps and kicks a man off his horse, he is replaced by a stunt double.
The Last of the Fourth of Julys - S1-E10
Revealing mistake: On the island, when Steve pole-vaults, he is replaced by a much younger stuntman with longer hair. (00:19:33)
The Last of the Fourth of Julys - S1-E10
Revealing mistake: On the island, when Steve is climbing up or down the mountain, his stunt double has a different build and a completely different hairstyle.
The Last of the Fourth of Julys - S1-E10
Revealing mistake: When Steve is running with the pole, about to jump over the high bar, he is replaced mid-run by a stuntman with noticeably longer hair. Mid-air, the stuntman is then replaced again by Steve.
