Mandarin said that the dark Heart Crystal needed superhumans to power it, but Hawkeye was plugged into it, and he doesn't have any superpowers
When battling Forceworks after the fog has disabled their technology, Blacklash mentions that their powers still work. However, Blizzard and Blacklash should be defenceless because they both use technology to power their weapons.
At the end of the episode, right before Iron Man flies into the Hulk, his jets are colored green, instead of their usual red and yellow coloring.
Towards the end of the episode, The Leader's goatee disappears and reappears several times.
There's a flashback from "Beauty Knows No Pain" episode in which Madam Masque is waiting for Iron Man to get back from the tunnel.The thing is she said ''Tony!'' while she was waiting for him.Of course it wasn't mentioned in flashback since the Mandarin was the one who watched it.
If the Mandarin's rings are so powerful that he can look anywhere in past, he could discover Iron Man's identity at anytime.
Throughout the battle with Ultimo at the airport, the part at his midsection kept changing from gold to silver.
In this episode, the Mandarin found one of his rings sold on the auction. Why would a ring with unknown origin be so valuable?
How can you be the size of 1 atom if there are millions of atoms in you?
When Julia was captured, she was wearing pants and a white shirt. Yet when she was being tortured she was wearing the dress she wears at work.
The paper which Dum Dum Dugan showed to Iron Man had nonrealistic reflection on IM's helmet.
How can Iron Man drink coffee without taking off his helmet?
Fin Fang Foom's home planet is revealed to be called Kakaranathara.
Shouldn't Jim be a little suspicious about Tony's death since he didn't find body?
The dragons said that they were on Earth for thousands of years disguised as humans, all except for Fin Fang Foom. But in "The Origin Of the Mandarin", when Mandarin received his powers he confronted FFF and two more dragons.
Julia's middle name is revealed to be "Eugenia."
When IRVING showed the Force Works replay of Iron Man's fight with the robot, IM was in his basic armor, but actually, he was wearing special volcano armor.
In the cartoon,Yinsen's full name is Dr. Wellington Yinsen, but in comics, it's Ho Yinsen.
Iron Man's lava armor looks exactly like his underwater armor.
How could Tony remember the conversation between his mother and father if he wasn't present? Also the accident in which his father was injured.