Appearing in "Sidekicks (Part 4 of 6)"
- Young Avengers
- Avengers (Mentioned)
- Jessica Jones' Unborn Child (Mentioned)
- Mockingbird (Bobbi Morse) (Mentioned)
- Black Knight (Dane Whitman) (Mentioned)
- Swordsman (Jacques Duquesne) (Mentioned)
- Vision (Mentioned)
- Adolf Hitler (Mentioned)
Races and Species:
- United States of America
- Avengers Fail-Safe Program (Mentioned)
- Captain America's Uniform
- Captain America's Shield
- Extremis Armor
- Kang Armor
- Patriot's Uniform
- Stature's Suit
- Iron Lad Armor
- Kate Bishop's costume
- Wiccan's Suit
- Wiccan's Staff
- Jewel's Suit
- Mutant Growth Hormone (Behind the scenes)
Synopsis for "Sidekicks (Part 4 of 6)"
In the training facility, Richards, Elijah, Teddy, Billy, and Cassie realize that they have been tricked into waiting while Stark and Rogers call the police and their parents. They each attempt to use their powers to escape the room, but they each fail and Elijah suggests that Kaplan use his "other powers." Richards accepts Cassie as a member of the Young Avengers, but their conversation is interrupted when Kate opens the door from the outside, explaining that Iron Man and Captain America are outside "talking to Kang."
Outside, Jessica disarms Kang, who claims that he must return Richards to the thirtieth century in order to maintain the timestream, or "reality, as you know it, will cease to exist." He points out that the world around them is already changing, and the three realize that New York City is crumbling around them.
In the training facility, the Young Avengers retrieve their equipment and prepare to head outside as Kate takes up the weapons of both Hawkeye and Mockingbird, earning her the nickname of "Hawkingbird." Patriot insists that Kate is "not coming with" them until she presents him with the traditionally-shaped shield of Captain America.
Outside, Iron Man and Captain America discover that their uniforms have changed, and Jessica finds herself wearing her Jewel costume, which now fits because she is no longer pregnant. Realizing how much the timestream will change, Captain America agrees to give up Richards to Kang, not realizing that the Young Avengers are near enough to overhear.
The Young Avengers search for a way out through the Mansion's subbasements, though Kate suggests that perhaps Richards should return to his own time if his staying will cause the entirety of history to change. Hulkling reluctantly agrees, but Patriot refuses to turn Richards over, and Richards leads the team through a tunnel that empties out near the Mansion's front gates where the Young Avengers discover Jewel, Captain America, Iron Man, and Kang waiting for them. Captain America tells Richards that he has no choice but to return to the future with Kang, but Richards flies off and Iron Man gives chase after throwing off Hulkling, who reveals that he is actually a shape-shifter.
Above New York City, Iron Man and Iron Lad fight one another, and Richards blasts Stark out of the sky. Richards catches Stark and returns to the the Mansion, where Kang overrides the Iron Lad armor and causes Richards to attack Kaplan, Atlman, and Cassie. Kang then orders the Iron Lad armor to detonate a massive blast that levels the Mansion and knocks the Avengers and Young Avengers unconscious before suggesting that he and Richards leave the 21st Century.
- When Kate Bishop wears her new costume, Patriot calls her "Hawkingbird" because she has Hawkeye's bow and Mockingbird's mask and battle staves.
- Hulkling is revealed to be a shape-shifter.