[quote=@Lightning]
Hmm, it seems that the agency done some recon on the heroes they sent emblems to so I don't think that a language barrier would be an issue for a people that figured out inter-dimensional travel.
[/quote]

Technically they only reverse engineered it & copied* it, someone else figured out how to do it.

*Copying might be that great depends on what caused the people to appear all around the base.