For Poe, the Spice Runnin’ Boy, could we maybe pull some Keri Russell dialogue from The Americans? Something like “He was a spy,” or “He was a double agent”? Then we could just add some audio filters to give it that helmet quality.
If we just had that little piece, I think it would be pretty easy to cut around the rest of the dialogue and make it fit. I’m definitely willing to try if someone can help me track down those lines!