Cross was last seen getting crushed to subatomic size, which will likely factor into his transformation to MODOK.

Source: https://screenrant.com/ant-man-3-modok-inspiration-frank-grimes-simpsons/

Dibaryons are the subatomic particles made of two baryons.

Source: https://phys.org/news/2023-03-evidence-deeply-bound-dibaryon-built.html

On Friday, Marvel Studios’ next big movie goes small — subatomic, actually.

Source: https://www.1310kfka.com/abc-news/entertainment/02/ant-man-and-the-wasp-quantumania-director-peyton-reed-on-the-movies-heavy-metal-inspiration/

Some of their experiments test the theory that objects' mass comes from the jumbled directions in which the subatomic particles of their atoms spin.

Source: https://www.dailymail.co.uk/news/article-12671139/FBI-agents-visited-New-Jersey-lab-UFO-investigation.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

To function, quantum computers use subatomic particles, such as electrons or photons, to represent and manipulate information in quantum bits (qubits).

Source: https://investorplace.com/2023/08/3-quantum-computing-stocks-you-better-be-buying-on-each-and-every-dip/