Who designed the railgun?

I think a lot of times what we do is we'll have multiple concept artists create something, and then we'll see, okay, this is how the mass driver works, this is how this kind of weapon works. So it's kind of hard to say exactly who designs what, because someone might design a look and then that person might take that exact look and then kind of form-fit it to be a handheld weapon or something like that. So Jeremiah sometimes works on concepts of Rob or Rita's old ones. So there's a lot of artists involved in the art process. I think more often than not, it's a team effort.