The Crab with the Golden Claws: Part 1 - S1-E1
Revealing mistake: After Snowy tackles the man, the man throws him onto the ground and then says "I'll tend to you later, mutt", then turns his head to Tintin and says "But first I'm gonna take care of you." Just as the shot ends, Tintin's mouth vanishes from shot for a brief frame. (00:06:15)
The Blue Lotus: Part 2 - S1-E9
Revealing mistake: There's a shot where there's tons of people walking beside the train. The people that walk by repeat as the same people 2 times. (00:29:00)
Revealing mistake: When Tintin and Snowy arrive in Chicago on the train, whilst Tintin says "Here we are Snowy. Chicago", his fingers pass through the window frame of the train. (00:02:20)
Revealing mistake: When Tintin is getting into the taxicab after leaving the train station, the cars driving on the road in the background are the exact same purple car design duplicated over and over. (00:02:30)
Revealing mistake: When the driver covers the windows in the taxicab, in the shot where he says "Too bad you won't get to appreciate the view", the cover shown between the back seat and the front seat has visibly not been fully drawn in yet, and an unfilled gap can be seen in the cover. (00:03:05)
Revealing mistake: When Tintin is writing his news report on the mafia, the writing does not appear when typed, but instead appears one row at a time. Also, when he removes the paper from the typewriter, several rows of writing have suddenly appeared. (00:20:50)
Destination Moon: Part 2 - S3-E10
Revealing mistake: When Calculus is showing Tintin and Haddock around the rocket, they are in the deck below. Tintin and Calculus have already climbed down the ladder and Haddock is still climbing. Whilst Haddock is climbing down, the button on the back of his space suit vanishes for one frame. (00:31:50)
Destination Moon: Part 1 - S3-E9
Revealing mistake: When the countdown to engage the nuclear reactor on the model rocket has reached zero, Tintin pushes the second lever. It is apparent that Tintin is not actually holding onto a lever, but merely the animation is just drawn in a way to make it appear that he is. The green ball shown on top of the lever is not in the shape of a ball, but is really just the colour green that has been filled in through the gap between Tintin's thumb and finger. The lever doesn't even resemble a ball shape as it should. (00:16:40)
Prisoners of the Sun: Part 1 - S3-E5
Revealing mistake: When Tintin is swimming back to the boat after escaping the ship, Haddock is quickly rowing back and forth to reach him in time. As Haddock rows, the bars used to place the oars through can be seen moving back and forth, along with the movements of the oars, even though the bars are supposed to remain still during the oar movements. There are also frames from this shot where the bars vanish from the frame entirely as Haddock rows. (00:07:25)
The Castafiore Emerald: Part 1 - S3-E7
Revealing mistake: When Castafiore is showing everyone the Castafiore emerald, after she says "He named it in my honour", the shot cuts to a close-up of her hand, saying "The Castafiore Emerald." At the start of the shot, she has two rings on two fingers, then she turns her hand and the two rings vanish from her fingers entirely. (00:09:00)
The Castafiore Emerald: Part 2 - S3-E8
Revealing mistake: When they are watching the news broadcast on Calculus' high definition television set, after the news broadcaster mentions Castafiore's stolen jewel, Castafiore says "He's talking about me." The mole on her cheek appears and vanishes from her face whilst she is saying the line, revealing a slip-up in the animation. (00:35:00)
Explorers on the Moon: Part 2 - S3-E12
Revealing mistake: On Earth, in the shot of the rocket making its landing, the booster ignition can be seen passing over the edge of the booster, and over part of the rocket. (00:41:10)
Destination Moon: Part 1 - S3-E9
Revealing mistake: When the radar is telling the control station that they are standing by, in the background outside, there is a mark shown on the ground outside that appears to be flickering by appearing and disappearing between frames. (00:15:20)
Destination Moon: Part 1 - S3-E9
Revealing mistake: Haddock asks Tintin if he can control the rocket's nuclear reactor and takes hold of the lever. It is apparent that he is not holding onto the lever. He is merely just miming the actions of grabbing onto the lever, when the lever is shown just below where he is holding. (00:18:40)
The Castafiore Emerald: Part 1 - S3-E7
Revealing mistake: When Castafiore locks her jewels in the drawer, she places the key inside the lock, but the key visibly surpasses the edge of the lock. (00:10:00)
The Castafiore Emerald: Part 2 - S3-E8
Revealing mistake: After Calculus has finished the high definition television broadcast, Tintin and Snowy are lying on the grass. When the scene starts, a bird is shown flying into frame and continues flying, but whilst it is on-screen, the bird suddenly vanishes from the frame. (00:36:30)
The Seven Crystal Balls: Part 1 - S3-E3
Revealing mistake: When General Alcazar introduces his act, a stagehand appears behind Alcazar, to set down the knives for his act. The stagehand is never seen walking into and entering the frame. He just randomly appears on screen. (00:05:00)
The Seven Crystal Balls: Part 1 - S3-E3
Revealing mistake: After the announcer at the theatre goes to leave the stage as Bianca Castafiore walks onstage, no animation is seen of him leaving the frame, he just randomly vanishes from the shot just as he is about to exit the frame. (00:07:15)
The Seven Crystal Balls: Part 1 - S3-E3
Revealing mistake: When the theatre announcer announces Bianca Castafiore, Castafiore is shown walking onstage to perform. There is no animation seen of Castafiore walking into the frame, she just randomly appears in the shot. (00:07:10)
The Seven Crystal Balls: Part 1 - S3-E3
Revealing mistake: Tintin, Haddock and Professor Calculus are driving to the last professor's house and Haddock is the one driving. All three of them get out and walk to the gate, but even though no-one else is inside the car, a pair of hands can still be seen holding the steering wheel. (00:15:50)
Answer: According to Wikipedia, he is described as being a youth anywhere from 14 - 19 years old. There is no specific age.
raywest ★