We see Tony Stark using the Iron Man armor Mark 50 during the events of Infinity War. Then when we watch Avengers: Endgame, we see him donning Mark 85 armor.

So where are the rest of his armor between Mark 51 and Mark 84? Why were they not shown in the movie (like in Iron Man 3 we saw Mark 15 to Mark 42, all in action)? If there aren't any, what's the point of having that armor named Mark 85?

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    He started to take the "Seal Team 6" approach and giving his armors arbitrary numbers, just to make them sound like he's got a ton of them, and they're all increasingly more advanced? – CBredlow Apr 30 at 17:54
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    Also he might not have made every single one. He could've designed Mark XX, hated it and stored away the blueprint, and moved onto Mark XX+1. – Virusbomb Apr 30 at 18:20
  • There were five years between Mark 50 and Mark 85? – Azor Ahai Apr 30 at 18:54
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    @Azor Ahai The Mark 50 was used in Infinity Wari n 2018, the Mark 85 in Endgame in 2023. – Gremer Apr 30 at 19:55
  • @Gremer Hence why I commented there were five years ... – Azor Ahai Apr 30 at 19:57

Likeliest reason; many of those Marks were only designs, or testbeds that were disassembled when they proved to have some flaws, or never finished, or a slight improvement was made that meant it was given a new Mark number.

Real life example, the Supermarine Spitfire. The Mark XX was originally the Mark IV prototype with the Griffon engine. The second Mark XX test aircraft was fitted with a Griffon II engine and first flew in August 1942, in December had engine switched out for a Griffon 61, and was designated the Mark 21.

So the Spitfire Mark 21 started life as a Spitfire Mark XX, which was really just a Spitfire Mark IV with a different engine.


Purely speculation on my part, but the suit from Infinity War was based around having nanobots as confirmed here.

The suit was entirely contained in a detachable housing unit of nanoparticles which could deploy over Stark's body with a simple push on it. MCU Wiki

I'm assuming that since the nanoparticles are so configurable based on Tony's thoughts, as seen when he produces all of the cool weapons from nowhere during the movie, MK 51 onward could reuse the same particles and just configure themselves differently. Suit designs 51 through 84 may have just reused the same nanoparticles that arranged themselves differently when activated, thus the other suit versions don't exist anymore because the same components make up MK 85.

The closest I can find to confirmation is this line, from a different page on the same Wiki.

It is a direct evolution of the Mark L, and as such, it functions with the same nanite technology, granting great versatility and efficiency. MCU Wiki

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