10 Infamous Movie Plot Holes That Have Simple Explanations
4. How Did Thanos Bring His Army To The Future? - Avengers: Endgame
The "Plot Hole"
How was 2014 Thanos (Josh Brolin) able to bring not only the Black Order but also his entire army to the present 2023 timeline with only a small number of Pym Particles?
The film explicitly states that a Pym Particle is required for every individual entity attempting to time travel, so how did Thanos create tens of thousands (if not more) for his army?
The Explanation
Co-director Joe Russo was unsurprisingly asked about this during the week of Endgame's release, and sensibly deferred to the simplest solution being the right one:
"There is a guy called Maw in [Thanos'] army, he was a great wizard. Thanos himself was a brilliant genius as well. Those two easily reverse engineered and mass produced Pym Particles."
Russo is of course referring to Black Order member Ebony Maw (Tom Vaughan-Lawlor) - aka Squidward - who was able to magick up as many Pym Particles as Thanos needed. Simples.