[That's a problem when you have 3 names to juggle around, especially when he doesn't really know how he ended up in this place or who may be watching. But since he landed wearing the Superman uniform one of the names is already out, so.]

You can call me Kal.

And from what I see we can all understand each other, so I'm guessing the translation works as well. I wonder how this... thing works to begin with but it seems either fairly advanced or completely magical.

Right now I'm thinking it's the second.