Yellowjacket is the 18th episode in Season 2 and the 44th episode in the Avengers: Earth's Mightiest Heroes series.
Wasp and Iron Man try to persuade Hank Pym to rejoin the Avengers. However, he's far too obsessed with his experiments and driven by guilt over Ultron. To make things more complicated and more painful, a mysterious explosion in his lab errupts and apparently kills Pym. Meanwhile, a new vigilante called 'Yellowjacket' emerges in order to take down the Serpent Society.
- Iron Man: Hank, you need help.
- Yellowjacket: Me? I just shut down an Asgardian. You said I wasn't tough enough! Looks like I'm tougher than all of you.
- Hank Pym is no longer Ant-Man since "To steal an Ant-Man."
- Hank Pym is still not a member since "Ultron-5" until now.
- Between the end of "Ultron Unlimited" and the beginning of "Emperor Stark", Vision was still severely damaged after his rebellion against Ultron. However, he was curiously seen at the funeral scene somehow, fully repaired, most likely to be a production inconsistency.
- Right after JARVIS told Hawkeye and Black Panther that Thor was about to encounter Yellowjacket, two known companies can be seen in the shot directly after, Oscorp and Damage Control.