In the MCU, Tony Stark’s workshop is a place filled with awesome armors — but the most powerful one isn’t the Hulkbuster…or even an Iron Man suit.
Since 2008’s Iron Man, the first entry into the MCU, Tony Stark has worked to outdo himself, creating better, stronger versions of his signature Iron Man suit. It started in the cave with the massive Mark I, and it continued from one new version to the next. This leads to the point where Tony built his most powerful Iron Man armor in Avengers: Infinity War thanks to Nanotech, which allowed him to weaponize his armor.
In Iron Man 3 and Avengers: Age of Ultron, fans witnessed different armor for every possible occasion. Still, it turns out that none of these armors is the strongest in MCU. The thing is, the strongest armor isn’t worn by Tony Stark at all, it actually belongs to his wife, Pepper Potts.
Pepper Potts’ Rescue armor debuted in Avengers: Endgame, with Tony and Pepper’s daughter Morgan first seen playing with a blue and gold helmet. And Tony reveals that this special armor was explicitly made to gift Pepper. Later Pepper joins the rest of the Earth’s Mights Heroes in the battle to defeat Thanos and his army once and for all.
In the comics, the rescue armor debuted in 2009 in The Invincible Iron Man # 10. While wearing armor, Pepper was able to perform search and rescue missions but did not go to war against dangerous opponents. Also, the MCU version of the armor is much different – and more powerful.
As Pepper joins the climactic battle of Avengers: Endgame, she shows how powerful her armor is, by easily destroying the ships in Thanos’ army, and everything else she focuses on with her repulsive explosions.
It is a testament to the firepower and strength that Tony Stark instilled in his wife’s armor. It shows how much he has learned since he first fought with Chitauri, and it also shows how much power he is willing to give Pepper. However, it is important to note that he did not just give her power for power. In fact, it makes sense that this is the most powerful Tony Stark has ever made, apart from being the latest (and probably the last) suit he ever built in the MCU. After all, the primary function of this armor is to protect what is most dear to him: his family. Sure, he has made powerful suits for War Machine and Spider-Man, but it makes sense that Tony will only give his wife the best.
Fans have only seen a few glimpses of what the Rescue armor can do, but now that Tony is gone, Pepper could continue to operate as a superhero. If the character returns to the MCU, then she may get into more of the action, allowing the audience to see the other features Tony designed for it. It would only serve as further proof that no other armor can even come close to it. If anything, Pepper will be able to continue to keep her daughter safe from harm. That is until Morgan is old enough to make a suit of her own.