**Warning Major Spoilers for Avengers: Endgame Below**
The identity of the mystery young man at the end of Avengers: Endgame has been revealed. And the reason he might look familiar, but you can’t quite place where you know him from is because, when he first appeared in Iron Man 3, he was much younger.
The Avengers took the fight to Thanos and did whatever it took in order to defeat him. However, not all of the Avengers came out of the fight against Thanos unscathed. Tony Stark paid the ultimate price. He used the Infinity Gauntlet to turn Thanos and his minions into dust. However, his body was unable to handle the power of the Infinity Gauntlet and he died shortly after defeating Thanos and his army.
In one of the final scenes of the film, the Avengers are gathered at Tony’s new home and have a memorial service for the fallen Avenger. During that service, the camera reveals a who’s who of Avengers are present at Stark’s funeral. Most of them you recognize: Nick Fury, Hank Pym, Captain America, Maria Hill, and a whole lot more. However, there might be one character you didn’t recognize, and the camera kind of speeds past him as it moves to Nick Fury standing at the back.
That character is none other than Harley Keener played by Ty Simpkins from Iron Man 3. In Iron Man 3, Stark takes a shine to Keener, after the young boy catches Stark while he’s trying to repair his Iron Man suit. Stark had broken into the kids house and was using his garage as a makeshift lab.
Keener would help Stark overcome or at the very least confront his PTSD that he was suffering following the Battle of New York. Not only did the boy help Tony mentally and emotionally, but he also provided him with key parts to help him repair his Iron Man suit.
In fact, at the end of Iron Man 3, Tony provides Keener with his own lab and even gives him a brand new Potato Gun dubbed Potato Gun Mark II.
Including Simpkins character at the end of Avengers: Endgame indicates Stark and he more than likely kept in touch over the years. And who knows, maybe he will find even more inspiration from Tony Stark and follow in his footsteps, using his own mechanical genius to fight crime and work to protect the Earth.
Avengers: Endgame is currently in theaters.