Appearing in "World's Smartest Heroes!"
- Kai Bowen (First and only known appearance)
- Iron Man (Tony Stark) (Mentioned)
- Black Panther (T'Challa) (Mentioned)
- Captain America (Skrull imposter) (Mentioned)
- Hawkeye's Bow
- Trick Arrows
- Hawkeye's Suit
- Wasp's Suit
- Bio-Synthetic Wings
- Anti-Gravity Discs
- Wizard Armor
Synopsis for "World's Smartest Heroes!"
Wasp, Hawkeye, and Hulk are at the mansion when they receive a visit from "Avenger for a Day" contest winner, Kai Bowen. The young man doesn't hide his disappointment that he didn't get to meet the "cool" or "smart" Avengers. A.I.M. and the Wizard attack the mansion, with the Wizard bragging how he can hack the mansion's own Arc reactor to power his clone-piloted mechs to keep the heroes busy while he steals Stark's data for A.I.M.. Kai points out that the Avengers could just shut the reactor down to disable the mechs, so they do so, and quickly defeat the Wizard. Kai compliments the team on what he assumes was a staged attack to make things more exciting for his tour. Wasp goes along with it and presents him with an honorary Avengers ID card with his name on it misspelled "Bowers".
Appearing in "When The Grey Gargoyle Strikes"
- Grey Gargoyle
- Storm Giants
- Rock Trolls
- Masters of Evil (Only in flashback)
Synopsis for "When The Grey Gargoyle Strikes"
Iron Man and Captain America travel to Asgard to look for the remains of the Grey Gargoyle. After meeting up with Thor and defeating a horde of attacking Rock Trolls, they learn that the Gargoyle survived Enchantress and Executioner's betrayal and has taken over Nornheim, trapping its citizens as statues and empowering his army of Trolls with the power of living stone. The Big Three take the fight to Grey Gargoyle. Stark makes his gauntlets reassemble on Duval's hands, neutralizing his touch-based power, leading to a swift victory. The Norn people are restored and the Grey Gargoyle is apprehended. Thor offers his thanks and pledges to return to the Avengers soon.
Appearing in "Hulk TV!"
Synopsis for "Hulk TV!"
The Hulks argue over what to watch on TV.
• Two breathtaking tales of THE AVENGERS: EARTH’S MIGHTIEST HEROES by Chris Yost, the head writer of the hit animated series. • Lightning striking stone! Thor and Iron Man vs. Grey Gargoyle! • Plus: It’s might vs. bright when Hulk, Wasp and Hawkeye take on Marvel’s most malicious Mensa member: the Wizard!
- Includes "Fury Files" dossier on Power Man, with screenshots from the clip compilation segment aired alongside episodes of Ultimate Spider-Man, adapted by Chris Eliopoulos.
- First story seemingly takes place early in Season 2 based on the roster of Avengers mentioned.
- Second story takes place after Season 2, episode 3 - "Acts of Vengeance", based on the information on Grey Gargoyle the Avengers only could have received from Zemo after his capture.
- Iron Man and Captain America are depicted with their Season 1 designs, despite the story taking place in Season 2. Although Cap is correctly depicted wielding his energy shield.