how did omni mai find out oliver's name

Omni-Man likely found out Oliver’s name because Mark or someone else said it offscreen, and one Reddit discussion specifically suggests Mark may have mentioned Oliver to Allen, who then relayed it to Nolan.

What fans think

• The most common explanation is simple: Nolan didn’t magically know it; he was told.

• That Reddit thread also notes that Debbie was the one who originally named Oliver, which makes it even more likely Nolan wouldn’t automatically know the name.

Why the scene feels confusing

• In the conversation on the prison ship, Nolan refers to Oliver indirectly as “that kid,” which lines up with him not having been fully up to speed on the name at that moment.

• So the best read is that he learned it later through conversation, not through any special reveal.

If you want, I can also explain the comic vs. show difference for Oliver’s name.